Cayenne Peppers in Zone 8B — Southeast

Cayenne Peppers are a must-grow in the Southeast. Their fiery kick adds a welcome punch to everything from summer grilling to homemade hot sauce. Plus, you'll get immense satisfaction from harvesting armloads of peppers from your own garden, especially with our long summer.

Our hot and humid climate does present challenges like fungal diseases and pests, but starting indoors and timing your planting right takes advantage of our 255-day growing season and gives your Cayenne Peppers a strong start. With a little planning, you can enjoy a bountiful harvest.

Starting your Cayenne Pepper seeds indoors from mid-January through early February gives them a head start before our moderate spring arrives. This is especially important since our summers can get hot quickly. You have about a 3-week window to get your seeds going.

Use seed trays or small pots filled with a good seed-starting mix. Keep the soil consistently moist, and bottom watering is a great trick to avoid damping off. Provide warmth (a heat mat is helpful) and plenty of light, either from a grow light or a sunny windowsill.

Transplant your Cayenne Pepper seedlings outdoors from late March through late April, once the danger of frost has passed. Before transplanting, harden them off by gradually exposing them to outdoor conditions for about a week. This prevents shock.

Space the plants 18-24 inches apart in well-drained soil. Our clay soil can be amended with compost to improve drainage. Keep an eye on the weather forecast; those late-season cold snaps can still sneak up on you!

Cayenne Peppers need moderate watering, especially during our hot and humid summers. Aim for about 1 inch of water per week, either from rainfall or irrigation. You'll need to water more frequently during dry spells.

Stick your finger about 2 inches deep into the soil. If it feels dry, it's time to water. Water at the base of the plants to avoid wetting the foliage, which can encourage fungal diseases in our humid climate.

During fruit maturation, slightly reduce watering to concentrate the heat and flavor of the peppers. Watch for signs of underwatering (wilting leaves) or overwatering (yellowing leaves). Mulching around the base of the plants with pine straw or shredded bark helps retain moisture and suppress weeds.

While not always necessary, providing support for your Cayenne Pepper plants can be beneficial, especially as they become laden with fruit. Given their upright growth habit, they can get pretty tall. A simple stake works wonders.

Install the stake at planting time to avoid disturbing the roots later. Gently tie the main stem to the stake with soft twine or plant ties as the plant grows. This will prevent the plants from leaning or breaking under the weight of the peppers.

Pinching off the early flowers on your Cayenne Pepper plants encourages them to focus on vegetative growth and develop a strong root system before setting fruit. This is especially important in our long growing season.

Remove the flowers as soon as you see them, usually in late spring. Once the plants are established, let them produce fruit. As the first frost approaches around mid- November, you can remove any remaining flowers to encourage the plant to put its energy into ripening existing peppers.

You can expect your first Cayenne Pepper harvest from early June through late July, about 70 days after transplanting. The peppers are ready to pick when they are bright red, 4-6 inches long, and have a slight wrinkle on the skin. They should snap off the stem easily.

Harvest regularly to encourage continuous production throughout the summer. Even into fall! If a frost is predicted, harvest any remaining peppers, even if they are still green; they will ripen indoors.

To keep the plants producing, don't tug or rip the peppers off. Use pruning shears or scissors to cut the stem just above the pepper.

Here are some common problems you might encounter with Cayenne Peppers in the Southeast:

Blossom Drop

• What it looks like: Flowers fall off without setting fruit, or small fruit yellows and drops. The plant looks healthy but produces no peppers.
• What causes it: Temperature stress. Our hot summer nights (above 75°F) and days exceeding 95°F can prevent fruit set. Low humidity, excess nitrogen, or poor pollination can also contribute.
• How to fix/prevent it: Be patient; fruit set will resume when temperatures moderate. Provide afternoon shade during extreme heat. Keep plants well-watered but avoid over-fertilizing with nitrogen. Try hand-pollination.

Aphids

• What it looks like: Clusters of tiny green, black, or white insects on stems and leaf undersides. Sticky honeydew residue. Curled or distorted new growth.
• What causes it: Rapid-reproducing sap-sucking insects. Populations explode in warm weather. Ant colonies may farm them for honeydew.
• How to fix/prevent it: A strong water spray can knock them off. Encourage ladybugs and lacewings (natural predators). Use insecticidal soap for heavy infestations. Neem oil is also effective. Avoid excess nitrogen fertilizer.

Pepper Weevils

• What it looks like: Small, grayish-brown beetles with a long snout. You'll find tiny holes in pepper pods, especially near the stem. Inside, you'll see small, white larvae feeding on the pepper flesh and seeds. The pods may become distorted or drop prematurely.
• What causes it: Pepper weevils are drawn to pepper plants, especially in warm climates. They lay eggs inside the pods, and the larvae cause the damage.
• How to fix/prevent it: Inspect plants regularly for signs of weevils. Remove and destroy any infested pods. Use sticky traps to catch adult weevils. Insecticides labeled for pepper weevils can be used, but follow label instructions carefully. Rotate crops each year to disrupt the weevil life cycle.

Bacterial Spot

• What it looks like: Small, dark, water-soaked spots on leaves, stems, and fruit. The spots may have a yellow halo. On fruit, the spots can become raised and scab-like.
• What causes it: A bacterial disease that thrives in warm, humid conditions. It spreads through splashing water and contaminated tools.
• How to fix/prevent it: Use disease-free seeds and transplants. Avoid overhead watering. Provide good air circulation. Remove and destroy infected plant parts. Copper-based fungicides can help prevent the spread of the disease.

Southeast Specific Challenges: Our hot and humid climate creates a perfect environment for fungal diseases to thrive on Cayenne Peppers. Be vigilant about watering at the base of the plants, providing good air circulation, and using disease-resistant varieties if possible. Japanese beetles can also be a nuisance, so be prepared to hand-pick them off the plants or use appropriate insecticides.

Cayenne Peppers benefit from companion planting. Tomatoes make excellent companions because they share similar growing requirements and can provide some shade during the hottest part of the day. Basil repels pests like aphids and whiteflies, while also improving the flavor of the peppers. Carrots attract beneficial insects that prey on pests. Onions deter many pests with their strong scent.

Avoid planting Cayenne Peppers near fennel or kohlrabi. Fennel inhibits the growth of many plants, and kohlrabi can attract pests that will also feed on your peppers.