How to Grow Peppers: A Complete Guide

If you’ve never tasted a garden-grown pepper, you’re in for a treat. Garden-fresh peppers pack a flavor store-bought ones rarely match. From crunchy bell peppers in a salad to spicy jalapeños in your favorite dip, there’s a pepper for everyone. Growing peppers at home lets you enjoy them at their peak flavor.

Peppers are one of my favorite warm-season crops. In the low desert, they can be surprisingly long-lived, producing in spring, slowing down during the hottest part of summer, and then giving you another harvest in fall. Success depends on planting at the right time, watering consistently, and helping plants through extreme heat.

Whether you’re growing sweet bell peppers, jalapeños, poblanos, or something much hotter, these tips will help you grow healthy, productive pepper plants.

Choosing Pepper Varieties for Your Garden

Peppers come in many shapes, sizes, colors, and heat levels. Think about how you want to use them, then choose varieties that match.

• If you prefer sweet peppers, try bell varieties like ‘California Wonder’ or mini bell peppers for snacking.
• If you love heat, explore jalapeños, serranos, or even super-hot options like habaneros and Carolina Reapers.
• Poblano peppers are great for stuffing, while shishito peppers are perfect for frying. Learn how to grow poblano peppers in this guide.
• Chiltepin is a great match for the desert heat.

To get a deeper dive on different types of peppers, check out this guide: 16 Types of Peppers – Pepper Varieties

Starting Peppers: Seeds or Transplants?

Peppers need a long, warm growing season. If you’re starting from seed, begin indoors about 8 to 10 weeks before you plan to transplant them outside. Pepper seeds germinate best in warm soil, so a heat mat can help speed things up. Start seeds indoors the right way by following this guide.

Buying transplants is a good shortcut if you don’t want to start seeds indoors.

Before planting, gradually harden off seedlings. This is especially important in the low desert, where intense sun and heat can quickly damage young plants. My guide to hardening off seedlings in hot weather explains how I do it differently here.

In Arizona’s low desert, I plant pepper transplants from about mid-February through April, with another planting window from late July through September. Watch the weather rather than relying only on the calendar. Peppers are warm-season plants, and cold soil slows them down. I prefer soil temperatures around 65°F (18°C) or warmer before planting.

One advantage of growing peppers here is that healthy plants can live for more than one season. Spring plants often slow down during the hottest part of summer, then begin flowering and producing again as temperatures come down in fall. Learn more about the seasonal pruning that keeps them healthy in this guide.

Planting Peppers: Soil, Sunlight, and Spacing

Healthy peppers start with healthy soil. Plant them in well-draining soil amended with compost. Learn more about the right soil for raised beds here.

Unlike tomatoes, peppers don’t need deep planting. Set transplants at about the same depth they were growing in their container. Space pepper plants about 18 to 24 inches (45 to 60 cm) apart. Giving them enough room improves airflow and leaves space for mature plants to fill out.

Peppers like plenty of sun, but in the low desert they appreciate some protection from intense afternoon sun during summer. Morning sun with afternoon shade is ideal when possible. Shade cloth can also help established plants survive the hottest months.

Peppers grow well in raised beds, containers, and grow bags. For containers, I prefer at least a 5-gallon container for each plant. Larger containers hold moisture longer and give the roots more room.

Caring for Your Pepper Plants: Watering, Feeding, and Supporting

Peppers do best with consistent moisture, but they don’t like sitting in soggy soil. Water deeply enough to moisten the root zone, then let the topsoil dry before watering again. Check the soil instead of watering on a set schedule, especially as temperatures change. I use these garden grids to water my garden effectively and efficiently—and my peppers love them. Use code Angela10 to save $10 off $100 or ANGELA to save 7% on any size order.

Mulch helps keep soil temperatures more even and slows moisture loss. This makes a big difference during our hot, dry weather.

If you start with healthy, compost-amended soil, peppers don’t need constant feeding. Avoid over-fertilizing, especially with nitrogen, which can produce lots of leafy growth but little fruit. If growth slows or the leaves show signs of a nutrient deficiency, add compost or use an organic fertilizer.

As plants get larger, give them some support. Pepper branches can be surprisingly brittle, especially when they’re loaded with fruit. A small cage or stake helps keep branches from breaking. For more inexpensive ways to add vertical support, check out this guide.

Blossoms, Heat, & Fruit Set

If a small transplant already has flowers or fruit when you plant it, I usually remove them so the plant can put its energy into getting established. Once it’s growing well, I let it flower and fruit normally.

Peppers often stop setting fruit during extreme heat. The plant may look healthy and continue growing even when flowers drop without forming peppers. High nighttime temperatures are especially important. Peppers may stop setting fruit when nighttime temperatures remain above about 86°F (30°C). That’s why pepper production often slows during the hottest part of a low-desert summer and picks back up as nights cool.

Keep the plants healthy through summer with consistent water, mulch, and afternoon shade when possible. Once temperatures improve, flowering and fruit production often return.

Pest and Disease Management

Peppers are fairly resilient, but watch for aphids, spider mites, whiteflies, and hornworms.

Before treating anything, identify the pest and look for beneficial insects. Ladybugs, lacewings, assassin bugs, parasitic wasps, and other predators may already be helping. Find out more about attracting these beneficial insects in this guide.

If leaves suddenly disappear or you find large dark droppings underneath the plant, check carefully for hornworms. They blend in remarkably well with pepper and tomato foliage. My tomato hornworm guide shows what to look for and explains when to leave them alone and when removal makes sense.

Avoid spraying the entire plant just because you see insects. I prefer targeted control only when damage is becoming a problem.

Blossom end rot can also affect peppers. It’s related to calcium not reaching developing fruit, often because of inconsistent soil moisture rather than a lack of calcium in the soil. Water consistently and mulch around the plants to reduce moisture swings. Good airflow and keeping foliage dry when possible can also help reduce disease problems.

Harvesting Peppers: Timing and Techniques

You can harvest peppers at different stages depending on how you want to use them.

Many peppers start green and change color as they mature. Leaving them on the plant longer generally gives them a sweeter, more developed flavor, though you can harvest them green if you prefer.

Use scissors or pruning shears rather than pulling peppers from the plant. Pepper branches break easily, and it’s surprisingly easy to snap off an entire branch while trying to harvest one fruit.

In Arizona’s low desert, peppers are often ready to harvest by September. Explore the September harvest guide to see which other crops are likely ready alongside peppers. Harvest regularly while plants are producing. During the low-desert summer, production may slow or stop temporarily. Don’t assume the plant is finished. If it’s healthy, keep it watered and protected through the heat, and you may get another flush of peppers as temperatures cool in fall. If frost is forecast, harvest remaining fruit or protect the plants with frost cloth.

You can also prune healthy pepper plants and keep them for another season in mild-winter climates. Learn how I prune peppers here.

Saving Pepper Seeds

If you’ve grown a pepper variety you love, you can save seeds for another season. Let the pepper ripen completely on the plant before harvesting it for seed. Remove the seeds and allow them to dry thoroughly before storing them in a cool, dry place. Learn how to save seeds in this guide.

Keep in mind that pepper varieties can cross-pollinate. If you’re growing several varieties close together, saved seeds may not produce peppers exactly like the parent plant. Hybrid varieties also won’t necessarily grow true from saved seed. If keeping a variety true is important, isolate the plants or blossoms before pollination.

Storing, Preserving, and Enjoying Your Harvest

When your plants produce more peppers than you can use fresh, you have plenty of ways to preserve them.

You can store freshly harvested peppers on the counter for a day or two or in the fridge for up to two weeks. For longer storage, freeze, dehydrate, freeze-dry, or pickle them. Roasted peppers freeze well and are a delicious addition to soups, stews, or pizzas. This is the perfect time to learn how to roast and freeze peppers. You’ll capture that rich, smoky flavor to enjoy long after the season ends. If you love spicy flavors, try making your own hot sauce or pepper jelly.

There are plenty of ways to enjoy peppers.

• Poblano peppers are great for stuffing.
• Toss sweet peppers into a stir-fry.
• For a crowd-pleasing appetizer, you can’t go wrong with bacon-wrapped jalapeño poppers or pomegranate jalapeño cream cheese dip.
• Find your perfect heat by trying different peppers in my canned garden salsa recipe.

Growing Peppers FAQs