Bell Peppers in Zone 7B — Southeast

Bell peppers are a must-grow in any Southeast garden. Their sweet flavor shines in everything from summer salads to grilled skewers, and the satisfaction of harvesting armfuls of colorful peppers after a long summer is hard to beat. Plus, they thrive in our long, hot summers, giving you plenty of fresh produce to enjoy.

We definitely face challenges here in the Southeast, like humidity, fungal diseases, and those pesky Japanese beetles, but with careful planning and attention to timing, you can absolutely grow a bumper crop of bell peppers. Our 235-day growing season gives you a generous window to get it right.

To get a head start on the season, start your bell pepper seeds indoors from late January through mid February. This gives them about 8 weeks to develop before transplanting time rolls around. Use seed trays or small pots filled with a good seed-starting mix.

Keep the soil consistently moist – bottom watering works wonders to prevent damping off. Place the trays in a warm location, around 75-80°F, and provide plenty of light. A simple shop light or grow light works great for this. Our springs here in the Southeast can be a bit unpredictable, so starting indoors gives you more control.

Transplant your bell pepper seedlings outdoors from early April through early May, once the danger of frost has passed. Before planting, harden off your seedlings by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the sun and wind.

Space the plants 18-24 inches apart in well-drained soil. Remember our Southeast clay soil – amend it with plenty of compost! At transplant time, keep an eye on the weather forecast. A late cold snap can set your peppers back.

Bell peppers need consistent moisture to produce those thick-walled, juicy fruits we love. In our hot, humid Southeast summers, that can be a bit of a balancing act.

During the hotter months, especially in July and August, you'll likely need to water deeply a couple of times a week, providing about 1-2 inches of water each time. The finger test is your friend: stick your finger into the soil about 2 inches deep. If it feels dry, it's time to water. With our high humidity, water at the base of the plant to avoid wetting the foliage, which can encourage fungal diseases.

Signs of underwatering include wilting leaves and blossom drop. Overwatering, on the other hand, can lead to root rot and yellowing leaves. A good layer of mulch, like pine straw or shredded leaves, will help retain moisture and keep the soil temperature even.

Bell pepper plants can get weighed down by their fruit, especially after a good summer rain. Providing support is optional, but it can prevent branches from breaking and keep your peppers off the ground.

A simple stake and some soft twine work well. Insert the stake near the plant at planting time and gently tie the main stem to it as the plant grows. This is especially helpful for larger varieties.

Pruning bell peppers isn't essential, but it can improve airflow and encourage fruit production. In the early season, pinch off the first few flowers that appear. This encourages the plant to focus on vegetative growth, leading to a stronger, more productive plant later on.

Remove any fruit that touches the ground to prevent rot. Throughout the season, prune out any crowded or crossing interior branches to improve air circulation and reduce disease pressure. As the first frost approaches in early November, remove any new flowers so the plant focuses its energy on ripening existing peppers.

You can expect your first bell pepper harvest from mid June through late July, about 70 days after transplanting. Green peppers are perfectly fine to harvest, but the flavor gets sweeter and richer as they ripen to red, yellow, or orange.

A ripe pepper will be firm and have a glossy skin. To harvest, use sharp pruners or a knife to cut the stem just above the pepper. Be careful not to damage the plant. Regular harvesting encourages the plant to produce more peppers throughout our long summer. As the first frost approaches in early November, harvest any remaining peppers, even if they're still green. They can ripen indoors in a paper bag.

Bell peppers, like all garden plants, can face some challenges in our Southeast climate. Here are a few common problems and how to deal with them:

Blossom End Rot

• What it looks like: A sunken, dark brown or black leathery patch on the bottom of the pepper.
• What causes it: Inconsistent watering leads to a calcium deficiency. Our fluctuating rainfall patterns in the Southeast can make this tricky.
• How to fix/prevent it: Water consistently! Mulch heavily to maintain even soil moisture. Avoid over-fertilizing with nitrogen. Remove affected fruit.

Blossom Drop

• What it looks like: Flowers fall off without setting fruit. Small fruit yellows and drops.
• What causes it: Temperature stress, especially when nights stay above 75°F or days exceed 95°F. Our hot, humid summers are prime conditions.
• How to fix/prevent it: Be patient – fruit set resumes when temperatures moderate. Provide afternoon shade during extreme heat. Keep plants well-watered.

Aphids

• What it looks like: Clusters of tiny insects (green, black, or white) on stems and leaf undersides. Sticky honeydew residue.
• What causes it: Rapid-reproducing sap-sucking insects that thrive in warm weather.
• How to fix/prevent it: Strong water spray knocks them off. Encourage ladybugs. Insecticidal soap for heavy infestations. Avoid excess nitrogen fertilizer.

Sunscald

• What it looks like: White, papery patches on fruit exposed to direct sun.
• What causes it: Intense, direct sunlight on fruit, often after leaves are lost.
• How to fix/prevent it: Don't over-prune foliage. Use shade cloth in extreme heat.

Southeast Specific Challenges: Our hot, humid summers create ideal conditions for fungal diseases, so good air circulation is essential. The wet-summer rainfall pattern can lead to inconsistent soil moisture, contributing to blossom end rot and blossom drop. Keep a close eye on your plants and adjust your watering and care as needed.

Companion planting can be a great way to improve the health and productivity of your bell pepper plants.

Good companions for bell peppers include tomatoes, basil, carrots, onions, and spinach. Tomatoes and peppers enjoy similar growing conditions and can even provide some shade for each other. Basil repels pests like aphids and whiteflies. Carrots loosen the soil and attract beneficial insects. Onions deter pests with their strong scent. Spinach provides ground cover, helping to retain moisture and suppress weeds.

Avoid planting fennel, kohlrabi, and brassicas (like cabbage and broccoli) near bell peppers. Fennel inhibits the growth of many plants. Kohlrabi and brassicas compete for nutrients and can attract pests that also affect peppers.