Jalapeño Peppers in Zone 7B — Texas

Jalapeño Peppers are a must-grow in Texas! Their spicy kick adds flavor to everything from Tex-Mex dishes to grilled meats. Plus, they're surprisingly easy to grow in our long growing season, giving you plenty of peppers for fresh eating, pickling, or drying.

Our unpredictable weather and Texas heat can present challenges, but with careful timing and a few tricks, you can enjoy a bountiful harvest. Our 255-day growing season gives you two chances to grow them.

Starting Jalapeño Pepper seeds indoors gives you a head start before the Texas heat kicks in. You'll want to get those seeds going from mid January through early February, about eight weeks before you plan to transplant them outside. Remember, spring comes early here.

Use seed trays with a good seed-starting mix, and keep them warm – around 75-80°F is ideal. A heat mat can really help with germination. Also, give them plenty of light once they sprout. A simple shop light works, but grow lights are even better. Don’t forget to water from the bottom! Pour water into the tray to let the soil soak it up to avoid disturbing the seedlings.

Transplant your Jalapeño Pepper seedlings outdoors in late March through late April, after the last expected frost. Before planting, harden them off by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the Texas sun and wind.

Space your plants about 14-18 inches apart in a sunny spot with well-draining soil. Keep an eye on the forecast – those late-season cold snaps can still happen, so be ready to cover your plants if needed.

Jalapeño Peppers need consistent watering to thrive, but they don't like soggy feet. In the spring, when temperatures are milder, water deeply once or twice a week, providing about 1 inch of water each time. As the Texas heat intensifies during the summer, you might need to water every other day, or even daily, depending on rainfall.

Stick your finger about 2 inches deep into the soil – if it feels dry, it's time to water. It’s best to water at the base of the plant to avoid getting the leaves wet, especially with our variable humidity, which can lead to fungal problems. Underwatering can cause blossom drop, while overwatering can lead to root rot.

A good layer of mulch, like shredded hardwood or straw, helps retain moisture in the soil and regulate soil temperature. It can also reduce water evaporation.

Jalapeño Pepper plants can get pretty heavy with fruit, so providing some support is a good idea. A single stake works wonders for keeping the plant upright.

Install the stake at planting time, placing it a few inches away from the stem. As the plant grows, gently tie the main stem to the stake with soft twine or plant ties. This will prevent the plant from flopping over and breaking under the weight of the peppers.

Pinching off the first few flowers that appear on your Jalapeño Pepper plants encourages them to focus their energy on vegetative growth, resulting in stronger, more productive plants later on. Do this early in the season, before the plant starts setting fruit.

Also, if you notice any peppers developing corking (those white lines on the skin), you can remove them if you prefer smoother peppers. As the first frost approaches in mid- November, you can prune off any new flowers to encourage the plant to ripen existing peppers before the cold weather sets in.

You can expect your first Jalapeño Peppers to be ready for harvest from early June through late July, about 75 days after transplanting. Look for peppers that are 3-4 inches long and firm. You can harvest them green for a slightly milder flavor, or wait until they turn red for a sweeter, hotter kick.

Corking lines on the skin are also a sign of maturity. Use pruning shears or a sharp knife to cut the peppers from the plant, leaving a short stem attached. Regular harvesting encourages the plant to produce more peppers.

As the first frost approaches in mid- November, harvest any remaining peppers, even the green ones. They'll ripen indoors if you place them in a paper bag with an apple or banana.

Here are some common problems you might encounter growing Jalapeño Peppers in Texas:

Blossom Drop

• What it looks like: Flowers fall off without setting fruit. Small fruit yellows and drops. The plant looks healthy but produces no fruit.
• What causes it: Temperature stress is the main culprit. Peppers don't set fruit well when nights stay above 75°F or days 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 extreme heat. Keep plants well-watered. Avoid excess nitrogen fertilizer. Try hand-pollination by gently shaking the plant or using a small brush to transfer pollen.

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 can knock them off. Encourage ladybugs and lacewings (natural predators). Insecticidal soap works well for heavy infestations. Neem oil works systemically. Avoid excess nitrogen fertilizer, which attracts them. Also, control fire ants, which protect aphids.

Pepper Maggots (need content) Bacterial Leaf Spot (need content)

Texas Specific Challenges: The Texas heat, variable humidity, and unpredictable rainfall can all impact Jalapeño Pepper production. Extreme heat can cause blossom drop, while high humidity can lead to fungal diseases. Watch your plants closely and adjust your watering and care as needed to keep them healthy and productive.

Good companions for Jalapeño Peppers in Texas include tomatoes, basil, carrots, and onions. Tomatoes provide shade during the hottest part of the day, which can help prevent blossom drop. Basil repels many common pepper pests and attracts beneficial insects. Carrots loosen the soil and improve drainage. Onions deter pests like aphids and thrips.

Avoid planting Jalapeño Peppers near fennel or kohlrabi. Fennel inhibits the growth of many plants, including peppers. Kohlrabi can attract pests that also attack peppers.