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

10 Flowers that love hot summers - and how to grow them

Wondering which annual flowers can take the heat of an Arizona summer? Keep reading for 10 flowers that love hot summers – and how to grow them. The key is knowing what and when to plant. The climate in the low desert of Arizona will burn up many annuals commonly thought of as summer flowers.

Keep reading for my top choices for annual flowers that add color and beauty in Arizona summers, with pictures (all from my Mesa, Arizona yard and garden, taken during the summer) and tips for how to grow them. The dates listed for planting are for the low desert of Arizona. 

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10 Flowers that Love The Heat - and How to Grow Them: Zinnias (Zinnia elegans)

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

How to plant zinnias

  • Plant in full to part sun in soil amended with compost
  • Does not require additional feeding 

when to plant zinnias

tips

  • Needs regular watering
  • Leaves do not like getting wet, they will burn
  • Remove spent flowers to encourage production 

Good to know

  • Easy to grow
  • Attracts bees, butterflies, hummingbirds and beneficial insects
  • Makes excellent cut flower 
  • Try several different varieties 

10 Flowers that Love Hot Summers - and How to Grow Them: Globe Amaranth (Gomphrena globose)

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

How to plant Globe Amaranth

  • Plant in full sun to part sun
  • Space rows 6″-12″ apart

when to plant Globe Amaranth

  • Start indoors from seed 
  • Plant transplants from March through the middle of July
  • Blooms from April to October

tips

  • Grows well in containers
  • Very heat tolerant
  • Tolerates full sun, drought and neglect 

Good to know

  • Attracts bees, butterflies, hummingbirds and beneficial insects
  • Good for dried arrangements
  • Once dried, it remains the same color

10 Flowers that Love Summer Heat - and How to Grow Them: Vinca (Periwinkle)

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

How to plant vinca

  • Plant in areas with full sun to shade
  • Space plants 12″-15″  apart

when to plant vinca

tips

  • Pinch blooms for fuller plants
  • Needs regular water
  • If plant dries out, water it well and it may recover

good to know

  • Reseeds easily
  • Plant trailing varieties in containers
  • Abundant blooms
  • Tolerates neglect 
  • Space small blooms 6″ apart, the largest blooms need 3′
  • Likes full sun
  • Sow seeds directly into soil

tips

  • Tolerates poor soil, but better soil = better blooms
  • Smaller-size blooms can be grown in containers
  • Look for branching varieties and single-stem varieties

good to know

  • Makes a great trellis for other plants
  • Attracts birds and other wildlife
  • Edible seeds
  • Excellent cut flower
  • Start indoors or from seed
  • Likes full sun
  • Scatter seeds in rocky areas and scrape into dirt to grow as a wildflower 

tips

  • Prefers average soil
  • Tall plants may need support
  • Reseeds easily – collect seeds from spent blooms to save and share

good to know

  • Attracts birds, bees, butterflies
  • Tolerates poor soil conditions, drought and neglect 
  • Shorter varieties can be grown in containers
  • Try different varieties
 

10 Flowers that Can Take the Heat - and How to Grow Them: Blue Salvia

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

How to plant blue salvia

  • Plant in flower beds and containers, and along borders
  • Plant from transplants

when to plant Blue salvia

tips

  • Let blue salvia dry out between waterings
  • Cut back spent blooms to encourage more 

Good to know

  • Drought tolerant
  • Blooms all summer long
  • Attracts butterflies and hummingbirds

10 Flowers that Love Summer Heat - and How to Grow Them: Red Salvia

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

How to plant Red salvia

  • Red Salvia prefers afternoon shade in the heat of the summer
  • Plant in flower beds and containers, and along borders
  • Plant from transplants

when to plant red salvia

tips

  • Let red salvia dry out a little between waterings
  • Cut back spent blooms to encourage branching and more blooms

Good to know

  • Drought tolerant
  • Blooms all summer long
  • Attracts butterflies and hummingbirds
  • Reseeds easily
  • Dies back in frost but often returns – cut back in spring

10 Flowers that Don't Mind the Heat - and How to Grow Them: Black-Eyed Susan (Rudebekia)

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

How to plant rudebekia

  • Start seeds indoors or broadcast seeds in garden 
  • Space flowers 6″-12″
  • Prefers a little afternoon shade

when to plant rudebekia

tips

  • Leave blooms on the plant to reseed for next season
  • Shorter varieties grow well in containers

good to know

  • Wildflower – reseeds easily
  • Good cut flower
  • Good for drying
  • Attracts butterflies, bees (including native bees) and pollinators

10 Flowers that Love Summer Heat - and How to Grow Them: Angelonia (Summer Snapdragon)

Angelonia in Arizona Summer garden

How to plant angelonia

  • Prefers hot, sunny, summer locations
  • Likes moist, well-drained soil 
  • Plant in flowerbeds, borders and containers
  • Allow 1′-2′ between plants

when to plant angelonia

  • Plant after danger of frost has passed
  • Blooms all summer long
  • Possible to grow year-round

tips

  • Grows well in containers
  • Likes occasional feedings with all-purpose fertilizer
  • Cut back dead or dying stems to encourage blooms
  • Cover if danger of frost
 

good to know

  • Tolerates brief dry spells
  • Flowers all summer long
  • Attracts butterflies and bees
  • Low-maintenance
  • Comes in several colors 
  • Can be grown from seeds or cuttings
 

10 Flowers that Love Desert Heat - and How to Grow Them: Coreopsis

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

How to plant
Coreopsis

  • Tolerates full sun
  • Excellent border flower, and in containers

when to plant coreopsis

tips

  • Remove spent blooms to encourage production
  • Reseeds easily and comes back year after year 
  • Thin seedlings

Good to know

  • Excellent cut flower
  • Attracts birds and butterflies
  • Outlasts many other summer flowers

Looking for more ideas? Other summer bloomers include Summer Balsam, Basil, Begonia, Celiosa, Coleus, Dahlias, Desert Marigold, Desert Milkweed, Four O’Clock, Gaillardia, Gloriosa Daisy, Impatiens, Lisianthus, Mexican Hat, Mexican Sunflower, Portulaca, Purslane, Sage, Statice, Strawflower, Verbena, Wild Hyssop

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