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Arizona Annual Flowers: A Visual Guide for Low-Desert Flowers


Arizona Annual Flowers Planting Guide: A visual guide for low desert annual flowers


Annual flowers are a simple way to attract pollinators, fill bare spots in the landscape, and add a bright spot of color to containers in the yard and garden. “Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers” provides information to help gardeners succeed at growing annuals in the low desert of Arizona. 

The low desert of Arizona includes cities in and around Phoenix, including Glendale, Scottsdale, Paradise Valley, Mesa, Tempe, Chandler, Gilbert, Peoria, Apache Junction, Buckeye, Fountain Hills, Tolleson, Surprise, Sun City, Queen Creek, and Goodyear.

With nearly eighty annual flowers listed in the “Arizona Annual Flowers Planting Guide,” you are sure to find one to try

Seasons in Arizona are short, and timing is critical when planting. Use this Arizona Annual Flowers Planting Guide to learn when to plant, and whether to plant seeds or transplants. When you plant at the correct time, seeds will sprout and transplants will become established in the optimal conditions for each plant.


Flowers to Plant Outside & Seeds to Start Indoors Each Month in the Low Desert of Arizona.
• PLANTING GUIDE: Each month lists annual flowers to plant outside & seeds to start indoors.
• BLOOMING GUIDE: Photos show what may be in bloom that month.


Seed Box Labels with planting dates for vegetables and flowers


Disclaimer: this post contains affiliate links. See my disclosure policy for more information.


Click on a flower name to go directly to that flower:


Would you like the low-desert planting dates for vegetables, herbs, and flowers in a convenient calendar?

Gardener's Gift Guide: Garden Favorites​

*PLANTING GUIDE: Each month has a planting guide (letter boards) for the vegetables, herbs, and flowers to plant in the low desert of Arizona. 

*HARVEST GUIDE: Harvest guides are the photos of what it is possible to harvest each month. 


Click here to learn more


African Daisy

Cool Season Hardy Annual Flowers for Arizona

When to plant African daisies in Arizona

Plant seeds outside:
September 15 – November
*does best directly
sown in garden

How to grow African Daisies: 

  • Grows best from seed
  • Days from seed to bloom: 120
  • Months in bloom: January – April
  • Good to know: Reseeds readily; some consider invasive. When plants die back, shake seeds onto the ground after pulling plants to encourage reseeding the following year. 

Ageratum

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant in ageratum Arizona

Start seeds indoors:
August – December
Plant transplants outside:
October- January 15

How to grow Ageratum:

  • Grows best from transplant
  • Days from seed to bloom: 180
  • Months in bloom: February – May
  • Good to know: Prefers rich soil. Needs regular water. Easy to grow. Comes in many colors. Attracts pollinators. 

(Sweet) Alyssum

When to plant alyssum in Arizona

Start seeds indoors:
August – January
Plant seeds or transplants outside:
October – March

This article shares more information about how to grow alyssum.

How to grow Alyssum:

  • Grows best from seed or transplant 
  • When to plant alyssum in Arizona: October – March 
  • Days from seed to bloom: 30
  • Months in bloom: Late October – May
  • Good to know: If planted from seed, thin seedlings. Easy to grow. Grows well in sun or part shade. Reseeds easily. 

Angelonia

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant angelonia in Arizona: 

March – October

Grows best from transplant

How to grow Angelonia:

  • Months in bloom: Nearly all year if frost free 
  • Good to know: Angelonia is a tough plant that provides excellent color in the heat of low desert Arizona summers. Needs regular water; let established plants dry out a little between watering. Cover if there is a freeze. If plants do not freeze, they will provide year-round color. Divide established plants, and plant in other areas of the yard.

Aster

When to plant aster in Arizona

Start seeds indoors:
August – September
Plant transplants outside:
October – November

How to grow Aster:

  • Grows best from transplant
  • Days from seed to bloom: 180
  • Months in bloom: March – April
  • Good to know: Good cut flower. Attracts butterflies. Can be difficult to grow from seed. Keep deadheaded to encourage blooms. 

Baby’s Breath

When to plant baby’s breath in Arizona

Start seeds indoors:
July – October
Plant seeds or transplants outside:
September – December

How to grow Baby’s Breath:

  • Grows best from seed or transplant
  • Days from seed to bloom: 160
  • Months in bloom: March – May
  • Good to know: Good cut flower. Dries well.

Bee Balm

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant Bee Balm in Arizona

Start seeds indoors:
December – January
Plant seeds or transplants outside:
February – March

How to grow Bee Balm:

  • Grows best from seed or transplant
  • Days from seed to bloom: 75
  • Months in bloom: Late April – early July
  • Good to know: Difficult to grow. Attracts beneficial insects and pollinators. Considered a perennial flower, but often grown as an annual in the low desert of Arizona.

Begonia

When to plant begonias in Arizona: September – November

Grows best from transplant

How to grow Begonia: 

  • Days from seed to bloom: 180
  • Months in bloom: January – December
  • Good to know: Needs shade and regular water to grow well. 

Bells of Ireland

When to plant bells of Ireland in Arizona

Plant seeds outside:
September – November
*does best directly
sown in garden

How to grow Bells of Ireland:

  • Grows best from seed
  • Days from seed to bloom: 180
  • Months in bloom: March – May
  • Good to know: Good cut flower. 18″-24″ high.

Bigelow’s Purple Aster

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant Bigelow’s purple aster in Arizona: October – November

Grows best from seed

How to grow Bigelow’s Purple Aster: 

  • Days from seed to bloom: 150
  • Months in bloom: October – November and March – May
  • Good to know: Attracts butterflies. Wildflower. Reseeds. Easy to grow. 

Calendula

Cool Season Hardy Annual Flowers for Arizona

When to plant calendula in Arizona

Start seeds indoors:
August – September
Plant seeds or transplants outside:
September 15 – November

Read this article for more information about how to grow calendula.

How to grow Calendula:

  • Grows best from seed or transplant
  • Days from seed to bloom: 100
  • Months in bloom: December – May
  • Good to know: Edible, medicinal uses. Reseeds easily. Early bloomer. Often grown as a trap crop for aphids. Keep deadheaded to encourage blooms. 

Carnation

When to plant carnations in Arizona

Start seeds indoors:
August – November
Plant transplants outside:
October – January

How to grow Carnations:

  • Grows best from transplant
  • Days from seed to bloom: 150
  • Months in bloom: October – April
  • Good to know: Easy to grow. Good cut flower. Keep deadheaded to encourage blooms. Considered a perennial flower but is often grown as an annual in the low desert of Arizona. 

Celosia

When to plant celosia in Arizona

Start seeds indoors:
February – April
Plant transplants outside:
April – June 15

How to grow Celosia (Cockscomb):

  • Grows best from seed (started indoors if possible) or transplant (do not let transplants become root-bound) 
  • Days from seed to bloom: 120
  • Months in bloom: July – November
  • Good to know: Attracts pollinators and birds. Comes in several colors. Can be tricky to grow.

Chamomile

When to plant chamomile in Arizona

Start seeds indoors:
November – March
Plant transplants outside:
December – April

Read this article for more information about how to grow chamomile.

How to grow Chamomile:

  • Grows best from transplant
  • Keep flowers cut back to encourage more production.
  • Chamomile grows well with most other herbs and vegetables

Arizona Annual Flowers Planting Guide: A visual guide for low desert annual flowers (continued)


Clarkia

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant clarkia in Arizona

Start seeds indoors:
August – October
Plant transplants outside:
September 15 – November

How to grow Clarkia:

  • Grows best from transplants 
  • Days from seed to bloom: 150
  • Months in bloom: March – May
  • Good to know: Good cut flower. Easy to grow. Needs regular water. Keep deadheaded to encourage blooms. 

Coleus

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant coleus in Arizona

Start seeds indoors:
January – April
Plant transplants outside:
March – June 15

How to grow Coleus:

  • Grows best from transplant
  • Months in bloom: July – November
  • Good to know: Easy to grow. Needs regular water and part sun or shady conditions to thrive.

Coreopsis

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant coreopsis in Arizona

Start seeds indoors:
January – March
August – September
Plant seeds or transplants outside:
March – May
October – November

How to grow Coreopsis:

  • Grows best from seed
  • Days from seed to bloom: 30-60
  • Months in bloom:  April – September
  • Good to know: Wildflower; reseeds easily. Thin seedlings. Good cut flower. 

Cornflower (Bachelor Buttons)

When to plant cornflowers in Arizona

Plant seeds outside:
September 15 – November
*does best directly
sown in garden

Read this article for more information about how to grow bachelor buttons.

How to grow Cornflower (Bachelor Buttons):

  • Grows best from seed
  • Days from seed to bloom: 120
  • Months in bloom: February – June
  • Good to know: Reseeds easily. Good cut flower. Many colors are available. Easy to grow. Keep deadheaded to encourage blooms. 

Cosmos

When to plant cosmos in Arizona

Plant seeds outside:
March – June
*does best directly
sown in garden

How to grow Cosmos:

  • Grows best from seed
  • Days from seed to bloom: 120
  • Months in bloom: July – November
  • Good to know: Wildflower, reseeds easily. Good cut flower. Cutting central stem early produces fuller branching stems. Keep deadheaded to encourage blooms. 

Cosmos (Yellow)

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant yellow cosmos in Arizona

Plant seeds outside:
March – July
*does best directly
sown in garden

How to grow Yellow Cosmos:

  • Grows best from seed
  • Days from seed to bloom: 120
  • Months in bloom: September – November
  • Good to know: Reseeds easily. Taller plants may need support. Needs regular water. 

Creeping Zinnia

When to plant creeping zinnia in Arizona

Start seeds indoors:
January – March
Plant seeds or transplants outside:
March – May 15

How to grow Creeping Zinnia:

  • Grows best from seed or transplant
  • Days from seed to bloom: 30
  • Months in bloom: February – early May
  • Good to know: Attracts butterflies. Reseeds.

Chrysanthemum (Garden Mum)

When to plant chrysanthemums in Arizona

Plant transplants from October – November

How to grow Chrysanthemums:

  • Grows best from transplant.
  • Purchase transplants that have not bloomed yet.
  • After blooming, remove spent blooms to encourage a second flush of color.
  • Make sure container or garden bed has good drainage; mums can rot easily.

Dahlia

When to plant dahlia tubers in Arizona: January – March

How to grow Dahlias:

  • Days from planting tuber to bloom: 45 – 60
  • Months in bloom: April – June 
  • Good to know: Needs regular water and part sun to do well. Excellent cut flower.

Arizona Annual Flowers Planting Guide: A visual guide for low desert annual flowers (continued)


Dara (Queen Anne’s Lace)

When to plant dara in Arizona

Start seeds indoors:
September – October
Plant seeds or transplants outside:
October – November

How to grow Queen Anne’s Lace:

  • Grows best from seed
  • Days from seed to bloom: 65-90
  • Months in bloom: March – early May
  • Good to know: Can be invasive. Will reseed readily. Deadhead before seeds form on flower. Good cut flower and vase filler. 

Delphinium

When to plant delphinium in Arizona

Plant seeds outside:
September 15 – November
*does best directly
sown in garden

How to grow Delphinium:

  • Grows best from seed
  • Days from seed to bloom: 150
  • Months in bloom: March – May

Dianthus (Sweet William)

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant dianthus in Arizona

Start seeds indoors:
July – November
Plant transplants outside:
September – January

How to grow Dianthus (Sweet William):

  • Grows best from transplant
  • Days from seed to bloom180
  • Months in bloom: October – April
  • Good to know: Easy to grow. Edible. Comes in many colors. 

Dusty Miller

When to plant dusty miller in Arizona

Start seeds indoors:
January – February
Plant transplants outside:
March – May

How to grow Dusty Miller:

  • Grows best from transplant
  • Good to know: Easy to grow. Tender perennial in Zones 8-10. Excellent filler foliage in flower arrangements.

Echinacea (Purple Coneflower)

When to plant echinacea in Arizona

Start seeds indoors:
August – September
Plant transplants outside:
October – November

How to grow Purple Coneflower (Echinacea):

  • Grows best from transplant (Echinacea often blooms in the second year, and seeds need cold weather to germinate) 
  • Days from seed to bloom: 180
  • Months in bloom: April – June
  • Good to know: Attracts wildlife. Needs regular water. Good cut flower. Keep deadheaded to encourage blooms. 

English Daisy

When to plant English daisies in Arizona: October – March

Grows best from transplant

How to grow English Daisies:

  • Months in bloom: January – May
  • Good to know: The flower petals fold up at night and open again with the sun. Prefers shade. Keep deadheaded to encourage blooms. 

Evening Primrose

When to plant evening primrose in Arizona

Start seeds indoors:
August – September
Plant transplants outside:
October – November

How to grow Evening Primrose:

  • Grows best from transplant
  • Days from seed to bloom: 180
  • Months in bloom: March – June
  • Good to know: Attracts wildlife. Can be invasive.

Feverfew

When to plant feverfew in Arizona

Start seeds indoors:
October – February
Plant transplants outside:
December – April

How to grow Feverfew:

  • Grows best from transplant
  • Days from seed to bloom: 100
  • Good to know: Excellent cut flower. Prefers light, well-drained, moist, and fertile soil. 6.0-7.2 pH preferred.

Flax (Scarlet & Blue)

Cool Season Hardy Annual Flowers for Arizona

When to plant flax in Arizona

Plant seeds outside:
Sept. 15 – November
*does best directly
sown in garden

How to grow Flax:

  • Grows best from seed
  • Days from seed to bloom: 120
  • Months in bloom: January – early May
  • Good to know: Considered perennial flower. Scarlet and blue varieties. Wildflower; reseeds easily. 

Forget-me-not

Cool Season Hardy Annual Flowers for Arizona

When to plant forget-me-nots in Arizona

Plant seeds outside:
September – December
*does best directly
sown in garden

How to grow Forget-me-nots:

  • Grows best from seed
  • Days from seed to bloom: 180
  • Months in bloom: March – May
  • Good to know: Wildflower; reseeds easily. Does best in part sun. 

Four O’Clock

Four o'clock flower in Arizona garden

When to plant four o’clocks in Arizona

Plant seeds outside:
March – June
*does best directly
sown in garden

Read this article for more information about how to grow four o’clocks.

How to grow Four O’Clock:

  • Grows best from seed
  • Days from seed to bloom: 90
  • Months in bloom: July – November
  • Good to know: Poisonous. Flowers open mid-afternoon. Reseeds. Needs afternoon shade. Attracts squash bugs.

Foxglove (Digitalis)

When to plant foxgloves in Arizona

Start seeds indoors:
July – August
Plant transplants outside:
September – October

Read this article for more information about how to grow foxglove.

How to grow Foxglove:

  • Grows best from transplant
  • Days from seed to bloom: 150
  • Months in bloom: March – May
  • Good to know:  Difficult to grow. Poisonous. Needs regular water and part sun. 

Gaillardia (Blanket Flower)

When to plant gaillardia in Arizona

Start seeds indoors:
July – September
November – February
Plant seeds or transplants outside:
September 15 – November 15
January – April

How to grow Gaillardia (Blanket Flower):

  • Grows best from seed or transplant
  • Days from seed to bloom: 150
  • Months in bloom: March – early November
  • Good to know: Easy to grow. Wildflower. Reseeds easily. Good cut flower. Keep deadheaded to encourage blooms. 

Gazania

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant gazania in Arizona

Plant transplants outside:
September 15 – November
February – April

Grows best from transplant

How to grow Gazanias:

  • Days from seed to bloom: 30-60
  • Months in bloom: Late October – June
  • Good to know: Considered a perennial flower, but often grown as an annual in the low desert of Arizona. 

Geranium

Cool Season Hardy Annual Flowers for Arizona

When to plant geraniums in Arizona: September – April

Grows best from transplant 

How to grow Geraniums:

  • Days from seed to bloom: 150
  • Months in bloom: February – June
  • Good to know: Remove flowers for the first few weeks to allow the plant to get established. Keep dead-headed for better blooms. Does best with regular water and 4-6 hours of sun. 
  • Considered a perennial flower, but often grown as an annual in the low desert of Arizona. 

Arizona Annual Flowers Planting Guide: A visual guide for low desert annual flowers (continued)


Globe Mallow

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant globe mallow in Arizona: October – November

Grows best from seed

How to grow Globe Mallow:

  • Days from seed to bloom: 120
  • Months in bloom: February – early July
  • Good to know: Wildflower, reseeds easily. Attracts birds and pollinators. Easy to grow.

Gomphrena (Globe Amaranth)

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant gomphrena in Arizona

Start seeds indoors:
January – May
Plant transplants outside:
March – July 15

Read this article to learn how to grow gomphrena.

How to grow Globe Amaranth:

  • Grows best from transplant 
  • Days from seed to bloom: 100
  • Months in bloom: April – September
  • Good to know: Different varieties: trailing and more compact types. Good cut flower. Excellent for drying. Cutting central stem early produces fuller branching stems. Heat tolerant. Easy to grow. Keep deadheaded to encourage blooms. 

Hollyhock

Cool Season Hardy Annual Flowers for Arizona

When to plant hollyhocks in Arizona

Start seeds indoors:
August – September
December – January
Plant seeds or transplants outside:
October – November
February – March

This article shares more information about how to grow hollyhocks

How to grow Hollyhocks:

  • Grows best from seed, can also be grown from transplant
  • Days from seed to bloom: Depends on variety
  • Months in bloom: April – June
  • Good to know: Many hollyhocks are biennials that grow strong root systems and foliage the first year. In the second year, they send up flowering shoots that produce seeds and then die.

Impatiens

When to plant impatiens in Arizona

Plant transplants outside from April – May

Grows best from transplant

How to grow Impatiens:

  • Days from seed to bloom: 90
  • Months in bloom: late July – November
  • One of very few blooming plants that grow in the shade.

Larkspur

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant larkspur in Arizona

Plant seeds outside:
September 15 – November
Or January
*does best directly
sown in garden

How to grow Larkspur:

  • Grows best from seed 
  • Days from seed to bloom: 180
  • Months in bloom: March – May
  • Good to know: Wildflower; reseeds heavily. Several colors. Easy to grow. Attracts hummingbirds.

Linaria (Toadflax)

When to plant linaria in Arizona

Plant seeds outside:
September 15 – November

*does best directly
sown in garden

How to grow Linaria (Toadflax):

  • Grows best from seed
  • Days from seed to bloom: 180
  • Months in bloom: March – April
  • Good to know: Wildflower, reseeds. Easy to grow. Many colors. 

Lisianthus

lisianthus flower in Arizona garden

When to plant lisianthus in Arizona:

March – June

Grows best from transplant

Read this article for more information about how to grow lisianthus

How to grow Lisianthus:

  • Days from transplant to bloom: 60-90
  • Months in bloom: May – November
  • Good to know: Good cut flower. Heat tolerant. Keep deadheaded to encourage blooms. 

Lobelia

Cool Season Hardy Annual Flowers for Arizona

When to plant lobelia in Arizona

Start seeds indoors:
July – October
Plant transplants outside:
September 15 – December

Read this article for more information about how to grow lobelia.

How to grow Lobelia:

  • Grows best from transplant
  • Days from seed to bloom: 150
  • Months in bloom: March – early June
  • Good to know: Prefers part sun. Needs regular water. Wait until hot temperatures subside to plant transplants. Keep deadheaded to encourage blooms. 

Lupine

Cool Season Hardy Annual Flowers for Arizona

When to plant lupine in Arizona

Plant seeds outside:
October – November
*does best directly
sown in garden

How to grow Lupine:

  • Grows best from seed
  • Days from seed to bloom: 120
  • Months in bloom: Late February – April
  • Good to know: Can be tricky to grow. Once they find a spot they like, will often reseed each year.

Marigold

Cool Season Hardy Annual Flowers for Arizona

When to plant marigolds in Arizona

Start seeds indoors:
January – April
August – September
Plant seeds or transplants outside:
February – May
September – October

This article shares more information about how to grow marigolds.

How to grow Marigolds:

  • Grows best from seed or transplants
  • Days from seed to bloom: 30-60
  • Months in bloom: Late September – December and March – June
  • Good to know: Good companion plant in the garden. Reseeds easily. Easy to grow. Needs regular water. Cutting central stem early produces fuller branching stems. Keep deadheaded to encourage blooms. 

Nasturtium

Cool Season Hardy Annual Flowers for Arizona

When to plant nasturtium in Arizona

Plant seeds outside:
October – January
*does best directly
sown in garden

This article shares more information about how to grow nasturtiums.

How to grow Nasturtiums:

  • Grows best from seed
  • Days from seed to bloom: 120
  • Months in bloom: February – May
  • Good to know: Edible. Good companion and trap crop. Overly-rich soil results in fewer blooms. Reseeds readily. 

Ornamental Cabbage & Kale

Cool Season Hardy Annual Flowers for Arizona

When to plant ornamental cabbage and kale in Arizona

Start seeds indoors:
July – October
Plant transplants outside:
September 15 – December

How to grow Ornamental Cabbage and Kale:

  • Grows best from transplant
  • Months “in bloom“: Late September – March
  • Good to know: Easy to grow. Needs regular water. Tolerates part shade.

Arizona Annual Flowers Planting Guide: A visual guide for low desert annual flowers (continued)


Painted Daisy

Cool Season Hardy Annual Flowers for Arizona

When to plant painted daisies in Arizona

Plant seeds outside:
October – November
*does best directly
sown in garden

How to grow Painted Daisies:

  • Grows best from seed
  • Days from seed to bloom: 150
  • Months in bloom: Late March – May
  • Good to know: Keep deadheaded to encourage blooms. Medium difficulty to grow. Needs regular water. Good cut flower. 

Pansy

Cool Season Hardy Annual Flowers for Arizona

When to plant pansies in Arizona

Start seeds indoors:
July – December
Plant transplants outside:
September 15 – February 15

How to grow Pansies:

  • Grows best from transplant
  • Days from seed to bloom: 30
  • Months in bloom: Late November – early May
  • Good to know: Keep deadheaded to encourage blooms. Edible. Easy to grow. Needs part shade. 

Petunia

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant petunias in Arizona

Start seeds indoors:
July – January
Plant transplants outside:
September 15 – March

How to grow Petunias:

  • Grows best from transplant
  • Days from seed to bloom: 30
  • Months in bloom: October – early May
  • Good to know: Pinch off flowers when first planted to encourage root development. Keep deadheaded to encourage blooms. Easy to grow. Needs regular watering. 

Phlox

Cool Season Hardy Annual Flowers for Arizona

When to plant phlox in Arizona

Plant seeds outside:
September 15 – November
*does best directly
sown in garden

How to grow Phlox:

  • Days from seed to bloom: 150
  • Months in bloom: March – May
  • Good to know: Good cut flower. Needs regular water. Easy to grow. Cut back stems after flowering. Different varieties have varying heights and colors. 

Poppy

Cool Season Hardy Annual Flowers for Arizona

When to plant poppies in Arizona

Plant seeds outside:
October – December
*does best directly
sown in garden

Read this article for more information about how to grow poppies

How to grow Poppies:

  • Grows best from seed
  • Days from seed to bloom: 120-150 
  • Months in bloom: March – early May
  • Good to know: Many different varieties (California, Shirley, Iceland). Reseeds easily. Seed pods are beautiful. Needs regular water. Easy to grow. 

Portulaca (Moss Rose)

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant portulaca in Arizona

Start seeds indoors:
January – April
Plant seeds or transplants outside:
March – June

How to grow Portulaca (Purslane):

  • Grows best from seed or transplant
  • Days from seed to bloom: 30
  • Months in bloom: Late February – October
  • Good to know: Edible. Water the plant only when the top of the soil is dry. Needs well-drained soil. Good for containers or rock gardens. Pinch back to encourage new growth.

Purslane

When to plant purslane in Arizona

Plant seeds or transplants outside:
February – August
*does best directly
sown in garden

How to grow purslane:

  • Grows best from seed, can also be grown from transplant
  • Days from seed to bloom: 30
  • Good to know: Although purslane is often considered a weed, it is edible and highly nutritious.

Arizona Annual Flowers Planting Guide: A visual guide for low desert annual flowers (continued)


Ranunculus

When to plant ranunculus in Arizona: October – November & February – March

(Presprout corms if planting in February – March)

Read this article for more information about how to grow ranunculus

How to grow Ranunculus:

  • Grows best from corms
  • Days from planting to bloom: 90-120
  • Months in bloom: February – May
  • Good to know: Plant the corms 6” apart and 2” deep with the claw side down. Excellent cut flower.  Typically flowers for 4 to 6 weeks. 

Ratibida (Mexican Hat)

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant ratibida in Arizona

Start seeds indoors:
August – September
Plant seeds or transplants outside:
October – November

How to grow Mexican Hat:

  • Grows best from seed or transplant
  • Days from seed to bloom: 180
  • Months in bloom: April – Early September
  • Good to know: Wildflower; often reseeds. Keep deadheaded to encourage blooms. 

Rudbeckia (Black-Eyed Susan)

When to plant rudbeckia in Arizona

Start seeds indoors:
August – January
Plant seeds or transplants outside:
October – March

How to grow Black Eyed-Susan (Rudbeckia):

  • Grows best from seed or transplant
  • Days from seed to bloom: 120
  • Months in bloom: July – September
  • Good to know: Good cut flower. Easy to grow. Wildflower; often reseeds. Keep deadheaded to encourage blooms. 

Safflower

When to plant safflower in Arizona

Plant seeds outside:
February – March
*does best directly
sown in garden

How to grow Safflower:

  • Grows best from seed
  • Days from seed to bloom: 90
  • Months in bloom: Late April – June
  • Good to know: Good cut flower. Easy to grow. Attracts wildlife.

Salpiglossis (Painted Tongue)

When to plant salpiglossis in Arizona

Start seeds indoors:
August – September
Plant transplants outside:
September 15 – November

How to grow Salpiglossis:

  • Grows best from transplant
  • Days from seed to bloom: 150
  • Months in bloom: March – early June
  • Good to know: Good cut flower. Difficult to grow.

Salvia (Blue & Red)

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant salvia in Arizona

Start seeds indoors:
August – September
January – March
Plant transplants outside:
September 15 – October
March – May 15

How to grow red Salvia:

  • Days from seed to bloom: 30
  • Months in bloom: April – early December
  • Good to know: Reseeds. Attracts hummingbirds and butterflies. Several colors and varieties. Keep deadheaded to encourage blooms.

Scabiosa (Pincushion Flower)

When to plant scabiosa in Arizona

Start seeds indoors:
August – September
Plant transplants outside:
October – November

How to grow Scabiosa:

  • Grows best from transplant
  • Days from seed to bloom: 180
  • Months in bloom: April – August
  • Good to know: Can be tricky to grow from seed, start transplants if available. Keep deadheaded to encourage blooms. 

Shasta Daisy

Arizona Annual Flower Planting Guide: A Visual Guide for Low-Desert Flowers

When to plant Shasta daisies in Arizona

Start seeds indoors:
July – September
Plant seeds or transplants outside:
October – November

How to grow Shasta Daisies:

  • Grows best from seed or transplant
  • Days from seed to bloom: 180
  • Months in bloom: April – July
  • Good to know: Needs regular water. Good cut flower. Attracts butterflies. Keep deadheaded to encourage blooms.

Snapdragon

When to plant snapdragons in Arizona

Start seeds indoors:
June – December
Plant transplants outside:
September 15 – February 15

How to grow Snapdragon:

  • Grows best from transplant
  • Days from seed to bloom: 30-60
  • Months in bloom: November – early June
  • Good to know: Attracts bees and butterflies. One of the easiest cool-season flowers to grow. Cutting central stem early produces fuller branching stems. Keep deadheaded to encourage blooms. 

Spilanthes (Toothache plant)

How to Grow Toothache Plant_ 5 Tips for Growing Spilanthes

When to plant spilanthes in Arizona

Start seeds indoors:
January – March
Plant transplants outside:
February – April

Read this article for more information about how to grow spilanthes (toothache plant).

How to grow Spilanthes:

  • Grows best from transplant.
  • Days from seed to bloom: 60-90
  • Good to know: Spilanthes is a heat-loving flower commonly called “toothache plant” due to the numbing sensation experienced after eating the leaves or more especially, the flowers.

Statice

When to plant statice in Arizona

Start seeds indoors:
September – October
Plant transplants outside:
October 15 – November

How to grow Statice:

  • Grows best from transplant
  • Days from seed to bloom: 150
  • Months in bloom: March – August
  • Good to know: Good cut flower. Dries well. Several colors are available.

Stock

When to plant stock in Arizona

Start seeds indoors:
August – November
Plant transplants outside:
October – January

How to grow Stock:

  • Grows best from transplants or seeds 
  • Days from seed to bloom: 150
  • Months in bloom: March – May
  • Good to know: Cutting central stem early (on most varieties) produces fuller branching stems. Keep deadheaded to encourage blooms. Needs regular water. Easy to grow. Fragrant. 

Strawflower

When to plant strawflowers in Arizona

Start seeds indoors:
August – December
Plant seeds or transplants outside:
October – February

This article shares more information about how to grow strawflowers

How to grow Strawflowers:

  • Grows best from transplants or seeds 
  • Days from seed to bloom: 150
  • Months in bloom: March – September
  • Good to know: Cutting central stem early produces fuller branching stems. Keep deadheaded to encourage blooms.  Good cut flower. Excellent for drying.

Sunflower

10 Flowers that love the heat of summer - and how to grow them -FLOWERS FOR ARIZONA SUMMERS – WHEN AND WHAT TO PLANT

When to plant sunflowers in Arizona

Plant seeds outside:
February – July
*does best directly
sown in garden

This article shares more information about how to grow sunflowers

How to grow Sunflowers:

  • Grows best from seed
  • Days from seed to bloom: 90
  • Months in bloom: May – November
  • Good to know: Start seeds in trays if birds are a problem. Easy to grow. Try single stem and branching varieties. Good cut flower. Attracts birds and pollinators. 

Arizona Annual Flowers Planting Guide: A visual guide for low desert annual flowers (continued)


Sweet Peas

Sweet Peas

When to plant sweet peas in Arizona

Start seeds indoors:
September – January
Plant seeds or transplants outside:
October – February

Read this article for more information about how to grow sweet peas.

How to grow Sweet Peas:

  • Days from seed to bloom: 120 
  • Months in bloom: February to early May
  • Good to know: Doesn’t like being pot bound; if starting indoors, transplant as soon as possible. Prefers rich soil. Needs regular water. Provide support or trellis for growing plants. 

Tithonia (Mexican Sunflower)

How to Grow Mexican Sunflowers: 5 Tips for Growing Tithonia

When to plant tithonia in Arizona

Plant seeds outside:
February – May
*does best directly
sown in garden

Read this article for more information about how to grow tithonia (Mexican sunflower). 

How to grow Tithonia:

  • Grows best from seed 
  • Days from seed to bloom: 120 
  • Months in bloom: July to early December
  • Good to know: Easy to grow heat-loving and drought tolerant flower. Does well in full sun. Plants grow large – provide plenty of room. 

Verbena

When to plant verbena in Arizona

Start seeds indoors:
June – September
Plant transplants outside:
September 15 – November

Read this article for more information about how to grow verbena.

How to grow Verbena:

  • Grows best from transplants
  • Days from seed to bloom: 120
  • Months in bloom: March – September 
  • Good to know: Easy to grow. Needs regular water. Wildflower types will often reseed. Keep deadheaded to encourage blooms. 

Vinca

When to plant vinca in Arizona

Start seeds indoors:
January – May
Plant transplants outside:
March – July

How to grow Vinca (Periwinkle):

  • Grows best from transplant
  • Days from seed to bloom: 30
  • Months in bloom: April – October
  • Good to know: Keep deadheaded to encourage blooms. Tolerates hot conditions. Needs regular watering. Often reseeds. Look for trailing varieties for containers. Cutting central stem early produces fuller branching stems. Easy to grow. 

Violet (Johnny-jump-up)

Cool Season Hardy Annual Flowers for Arizona

When to plant violets in Arizona

Start seeds indoors:
August – September
Plant transplants outside:
October – November

Read this article for more information about how to grow violas.

How to grow Johnny-jump-up (Violas) in Arizona:

  • Grows best from seed or transplant
  • Days from seed to bloom: 120
  • Months in bloom: March – May
  • Good to know: Edible. Reseeds. Keep deadheaded to encourage blooms. 

Wild Hyssop

When to plant wild hyssop in Arizona

Start seeds indoors:
December – January
Plant seeds or transplants outside:
February – March

How to grow Wild Hyssop:

  • Grows best from seed or transplant
  • Days from seed to bloom: 90-210
  • Months in bloom: June – September
  • Good to know: Needs regular water. Attracts wildlife. Afternoon shade preferred.

Yarrow

When to plant yarrow in Arizona

Start seeds indoors:
August – September
December – January
Plant transplants outside:
October – November
February – March

How to grow Yarrow:

  • Grows best from transplant
  • Days from seed to bloom: 30
  • Months in bloom: May – August
  • Good to know: Good cut flower. Attracts butterflies. Wildflower.

Zinnia

When to plant zinnias in Arizona

Start seeds indoors:
February – May
Plant seeds or
transplants outside:
March – June

Read this article for more information about how to grow zinnias

How to grow Zinnias in Arizona:

  • Grows best from seed or transplant 
  • Days from seed to bloom: 30
  • Months in bloom: April – November
  • Good to know: Attracts butterflies. Good cut flower. Do not get leaves wet. Easy to grow. Cutting central stem early produces fuller branching stems. Grows well in full sun. Keep deadheaded to encourage blooms.

Additional Planting Guides for the Low Desert of Arizona

Vegetable Planting Guide: A Visual Planting Guide for Low Desert Vegetables
Arizona Herb Planting Guide_ A Visual Planting Guide for Low Desert Herbs
Arizona Vine Planting Guide: A Visual Guide to Planting and Growing Low Desert Vines

If you found this Arizona annual flowers planting guide helpful, please share it:

Want to learn more about how to grow annual flowers?

Flower Planting Guide for the Low Desert – This guide published by the Maricopa County Cooperative Extension office was a valuable resource as I’ve learned to grow flowers in the low desert. I also used it as a reference in this Arizona Annual Flowers Planting Guide. 

Celia

Thursday 17th of February 2022

Hi, I planted a blue salvia, salvia longispicata x farinacea, in October and it's done really well until very recently. The leaves are developing grayish spotted patches. The other plants in the pot (nemesia, bacopa) are all thriving. It's large pot Any idea what it could be? Thanks in advance for your help!

Angela Judd

Friday 18th of February 2022

Could be powdery mildew. I'd pull the plants so it doesn't spread - or at least remove all the affected parts. https://growinginthegarden.com/how-to-prevent-and-treat-powdery-mildew/

Royal Norman

Wednesday 24th of November 2021

Love the onion guides. Going for it this cool season. Is growing garlic similar and do recommend any vendors? Thanks, Royal Norman

Angela Judd

Wednesday 24th of November 2021

There are a couple of differences, you can read the guide here: https://growinginthegarden.com/how-to-grow-garlic-10-tips-for-growing-garlic/ I get my garlic from Forever Young Farms.

Maria

Friday 15th of January 2021

Where can I buy Globe Amaranth seeds ??

Angela Judd

Friday 15th of January 2021

Most nurseries that carry seeds have them, as well as big box stores, they are fairly common. Online you can get them from Renee's garden: https://sh2543.ositracker.com/159509/9151/url_16913 and other online seed shops.

ljubica jelicic

Monday 10th of February 2020

PRELEPO CVEĆE.KAKO DOĆI DO SEMENA

Jean

Wednesday 13th of November 2019

I've learned about Coleus and Ornamental cabbage from "Garden Answer" on Youtube. They garden in Oregon, not AZ, but you should check them out if you haven't already. You two are my gardening favs!

Angela Judd

Wednesday 13th of November 2019

Laura from Garden Answer is great. She does a lot of fun things. Thank you for your kind words! Made my day.