Sweet Peppers in Zone 7A — Texas

Sweet peppers are a fantastic addition to any Texas garden. Their sweet, mild flavor is delicious raw, grilled, or stuffed, and they're incredibly versatile in the kitchen. Plus, there's nothing quite like the satisfaction of harvesting your own colorful peppers, especially knowing you grew them despite the Texas heat.

Our unpredictable weather can be a challenge, but with a little planning, you can enjoy a bountiful pepper harvest. Texas's long 245-day growing season gives you plenty of time to get those peppers going, and even a second crop if you're strategic.

Starting your sweet pepper seeds indoors is the way to go in Texas. Get those seeds going late January through mid February, about eight weeks before you plan to transplant them outside. This gives them a head start before the real heat kicks in.

Use seed trays with a good seed-starting mix. Keep them warm – around 75-80°F – and provide plenty of light. A simple shop light works great, or use a sunny windowsill. Don't forget to water from the bottom to encourage strong root growth and prevent damping off. Spring often brings early warmth, so starting indoors helps you get ahead of the game!

Once the danger of frost has passed, usually late March through late April, it's time to transplant your pepper seedlings outdoors. Before you do, harden them off by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the Texas sunshine and wind.

Plant your sweet peppers 18-24 inches apart in well-drained soil. Keep an eye on the weather forecast; even in late March and April, we can get some unexpected cool snaps. Be ready to cover your seedlings if a freeze threatens.

Consistent watering is key to growing sweet, thick-walled peppers in Texas. Our variable humidity and unpredictable rainfall mean you can't rely on Mother Nature alone. Peppers aren't drought-tolerant, so you need to stay on top of it.

During the hottest part of the summer, you'll likely need to water deeply two to three times a week, providing about 1-2 inches of water each time. Stick your finger about two inches into the soil; if it feels dry, it's time to water. Water at the base of the plant to avoid getting the leaves wet, which can encourage disease, especially with our humidity. In the spring and fall, you can usually reduce watering frequency.

Underwatering can lead to blossom end rot, while overwatering can cause root rot. Yellowing leaves can be a sign of either. Mulching around your pepper plants with a few inches of organic matter, like shredded bark, helps retain moisture and regulate soil temperature, which is crucial in our climate.

While not always necessary, some sweet pepper varieties can get quite large and benefit from some support, especially when they're loaded with fruit. This is particularly true for taller varieties.

Stakes or tomato cages work well for supporting sweet peppers. Install them at planting time to avoid damaging the roots later on. As the plant grows, gently tie the stems to the support using soft twine or plant ties. This will prevent the branches from breaking under the weight of the peppers.

Pinching off the first few flowers that appear on your sweet pepper plants can actually lead to a larger harvest later on. It might seem counterintuitive, but removing those early flowers encourages the plant to focus its energy on developing a strong root system and foliage.

Once the plant is well-established, let it do its thing. As we approach the first frost around mid- November, you can remove any remaining flowers to encourage the plant to put its energy into ripening the existing peppers.

You can expect your first sweet pepper harvest sometime in early June through late July, depending on the variety and when you transplanted. Sweet peppers are usually ready to harvest about 65 days after transplanting.

Look for peppers that have reached their full size and color for the variety you're growing. They'll get sweeter the longer they stay on the plant. To harvest, use sharp pruners or scissors to cut the pepper from the plant, leaving a short stem attached. This prevents damage to the plant.

Harvesting regularly encourages continued production. If a frost threatens near the end of the season, you can harvest any remaining green peppers and allow them to ripen indoors in a paper bag. They won't be as sweet as vine-ripened peppers, but they'll still be delicious.

Sweet peppers can run into a few problems here in Texas, but knowing what to look for can help you keep your plants healthy and productive.

• Blossom Drop
• What it looks like: Flowers fall off without setting fruit, or small fruit yellows and drops. The plant itself looks healthy, but no peppers are developing.
• What causes it: Temperature stress. Our Texas summers can be brutal, and peppers don't set fruit well when nighttime temperatures stay above 75°F or daytime temperatures exceed 95°F. Low humidity, excess nitrogen, or poor pollination can also contribute.
• How to fix/prevent it: Be patient — fruit set usually resumes when temperatures moderate. Provide afternoon shade during the hottest part of the day. Keep plants well-watered, but avoid over-fertilizing with nitrogen. You can also try hand-pollinating the flowers.
• Aphids
• What it looks like: Clusters of tiny green, black, or white soft-bodied insects on stems and the undersides of leaves. You might also see a sticky honeydew residue and curled or distorted new growth.
• What causes it: Aphids are sap-sucking insects that reproduce rapidly, especially in warm weather. Ant colonies often farm them for their honeydew.
• How to fix/prevent it: A strong blast of water from the hose can knock them off. Encourage natural predators like ladybugs and lacewings. For heavy infestations, use insecticidal soap or neem oil. Avoid excess nitrogen fertilizer, which attracts them.
• Sunscald
• What it looks like: White, papery patches on the fruit, usually on the side exposed to direct sun. The affected areas may blister and become susceptible to rot.
• What causes it: Intense, direct sunlight on the fruit, often after leaves are removed or lost to disease, suddenly exposing previously shaded fruit.
• How to fix/prevent it: Avoid over-pruning the foliage. Use shade cloth during extreme heat. Maintain healthy foliage to shade the fruit naturally. If fruit is already exposed, drape a small piece of row cover over it.
• Blossom End Rot
• What it looks like: A sunken, dark brown or black leathery patch on the bottom (blossom end) of the fruit. It often affects the first fruits of the season.
• What causes it: Calcium deficiency caused by inconsistent watering. It's not a disease, but a nutrient uptake problem triggered by drought/flood cycles.
• How to fix/prevent it: Water consistently – this is the single most effective fix. Mulch heavily to maintain even soil moisture. Avoid over-fertilizing with nitrogen. Calcium sprays can help marginally. Remove affected fruit.

Texas's climate, with its hot-to-extreme heat, variable humidity, and unpredictable rainfall, can make growing sweet peppers challenging. Consistent watering is crucial to prevent blossom end rot and blossom drop. Providing afternoon shade during the hottest part of the summer can also help prevent sunscald and blossom drop.

Companion planting can really help your sweet peppers thrive in the Texas garden. Plant basil nearby; it repels pests like aphids and whiteflies and is said to improve pepper flavor. Tomatoes are also good companions, as they share similar growing requirements.

Carrots and onions are beneficial because they deter soil pests. Spinach can act as a living mulch, helping to keep the soil cool and moist. Avoid planting fennel, kohlrabi, or other brassicas (like cabbage and broccoli) near your peppers, as they can inhibit their growth.