Cubanelle Pepper in Zone 7B — Texas

Cubanelle peppers are a fantastic addition to any Texas garden. Their mild, slightly sweet flavor and thin walls make them perfect for frying, stuffing, or adding to salsas. Plus, you can enjoy two pepper seasons here, making it a rewarding crop.

Sure, we face the Texas heat, unpredictable weather, and occasional drought, but with proper timing and care, you can successfully grow these peppers. Our long 255-day growing season gives you a great head start.

To get a jump start on our long growing season, start your Cubanelle pepper seeds indoors from mid January through early February. This gives them about 8 weeks to develop before transplanting.

Use seed trays or small pots filled with a good seed-starting mix. Keep the soil consistently moist but not soggy, and provide warmth using a heat mat. Bottom watering works great to prevent damping-off. Give them plenty of light with a grow light – our early spring can be pretty cloudy here in Texas.

Transplant your Cubanelle pepper seedlings outdoors from late March through late April, after the last expected frost. Be sure to harden them off for about a week beforehand by gradually exposing them to outdoor conditions.

Space the plants 18-24 inches apart in a sunny spot with well-drained soil. Keep an eye on the weather forecast – we can still get some unpredictable cool snaps during this time, so be ready to cover them if needed.

Cubanelle peppers need moderate watering, but they are not drought-tolerant, especially with our Texas heat. These thin-walled peppers will wilt quickly if they don't get enough water.

During the hottest parts of the summer, you'll likely need to water deeply about 2-3 times a week, providing about 1-2 inches of water each time. Use the finger test: stick your finger about 2 inches into the soil. If it feels dry, it's time to water. Adjust based on rainfall – we all know how unpredictable that can be!

Water at the base of the plants to avoid wetting the foliage, especially with our variable humidity. This helps prevent fungal diseases. Signs of underwatering include wilting leaves, while overwatering can lead to yellowing leaves and root rot. Mulching around the plants with a layer of compost or straw helps retain moisture and regulate soil temperature.

While not strictly necessary, providing some light support to your Cubanelle pepper plants can be beneficial, especially when they're loaded with fruit. The bush-like habit can cause them to topple over.

Simple stakes or tomato cages work well. Install them at planting time to avoid disturbing the roots later. Gently tie the main stems to the support as needed, allowing room for growth.

Pinching off the first few flowers that appear on your Cubanelle pepper plants encourages them to focus on vegetative growth, leading to more productive plants later in the season.

Throughout the season, regularly harvest the peppers as they ripen, as this also encourages continued production. As the first frost approaches around mid- November, you can remove any remaining small peppers to encourage the plant to put its energy into ripening the larger ones.

You can expect your first harvest of Cubanelle peppers from early June through late July, about 70 days after transplanting. Look for peppers that are pale yellow-green, thin-walled, and about 4-6 inches long.

Gently twist or cut the peppers from the plant, being careful not to damage the stems. Regular harvesting encourages continuous production throughout the season. As the first frost approaches in mid- November, harvest any remaining peppers, even if they're not fully ripe. They can ripen indoors in a paper bag.

Here are a few common problems you might encounter with Cubanelle peppers in Texas:

Thin Walls Bruise Easily

• What it looks like: Bruised or damaged spots on the peppers, especially during handling or after heavy rain or hail.
• What causes it: The thin walls of Cubanelle peppers make them susceptible to bruising from physical impact. Hail is a big problem here in Texas.
• How to fix/prevent it: Handle the peppers gently during harvesting and avoid overcrowding the plants. Consider using row covers to protect them from hail.

Aphids

• What it looks like: Clusters of tiny soft-bodied insects (green, black, or white) 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: Strong water spray knocks them off. Encourage ladybugs and lacewings (natural predators). Insecticidal soap for heavy infestations. Neem oil works systemically. Avoid excess nitrogen fertilizer (it attracts them).

Blossom End Rot

• What it looks like: Sunken, dark brown or black leathery patch on the bottom (blossom end) of fruit. Often affects first fruits of the season.
• What causes it: Calcium deficiency caused by inconsistent watering. Not a disease — it's a nutrient uptake problem triggered by drought/flood cycles.
• How to fix/prevent it: Water consistently (the single most effective fix). Mulch heavily to maintain even soil moisture. Don't over-fertilize with nitrogen. Calcium sprays help marginally. Remove affected fruit.

Texas Specific Challenges: The hot-to-extreme Texas heat, variable humidity, and unpredictable rainfall can exacerbate these problems. Consistent watering is key to preventing blossom end rot, and regular monitoring for pests is essential. Also, watch out for fire ants. They love peppers, too.

Good companion plants for Cubanelle peppers include tomatoes, basil, carrots, and onions. Tomatoes provide shade during the hottest part of the day, helping to prevent sunscald. Basil repels pests like aphids and whiteflies. Carrots attract beneficial insects that prey on pepper pests. Onions also repel pests and can help improve soil health.

Avoid planting fennel or brassicas (like cabbage, broccoli, and cauliflower) near your Cubanelle peppers. Fennel inhibits the growth of many plants, and brassicas can attract pests that also affect peppers.