Poblano Peppers in Zone 8A — Florida

Poblano peppers are a fantastic addition to any Florida garden. Their mild heat and rich flavor make them incredibly versatile in the kitchen, perfect for stuffing, roasting, or adding to salsas. Plus, the satisfaction of harvesting your own peppers, especially when you consider our reversed growing seasons, is hard to beat.

While we face challenges like intense summer heat, humidity, and nematodes here in Florida, growing poblanos is absolutely doable with the right timing and care. Our long, 283-day growing season gives you plenty of opportunity to enjoy a bountiful harvest.

Start your poblano pepper seeds indoors in early to late January, about eight weeks before you plan to transplant them outside. Use seed trays or small pots filled with a good seed-starting mix. Keep them warm – around 75-80°F – using a heat mat if necessary.

Place your seed trays under grow lights to ensure strong, healthy seedlings. A simple shop light works well. Water from the bottom to avoid damping off, which is a common problem in our humid Florida climate. Our spring here isn't like up north; it's a short window before the real heat hits.

Transplant your poblano seedlings outdoors from mid-March through early April, after the danger of frost has passed. It's crucial to harden them off first by gradually exposing them to outdoor conditions for about a week. This prevents shock and helps them adjust to the Florida sun.

Space your plants 18-24 inches apart in well-drained soil. Keep an eye on the weather forecast – those late cool snaps can still happen! If a cold front is coming, be ready to cover your young plants.

Watering poblanos correctly is key, especially with our hot, humid summers. Aim to keep the soil evenly moist, as these peppers need consistent moisture to develop those thick walls. We get a lot of rain in the summer, but it's not always reliable.

During the spring and fall, when it's drier, water deeply about 1-2 times per week, providing around 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. In the rainy summer months, you might not need to water at all, unless we're in a dry spell.

Water at the base of the plant to avoid getting the leaves wet, which can encourage fungal diseases in our humid climate. Overwatering can be just as bad as underwatering, leading to root rot. Signs of underwatering include wilting leaves, while yellowing leaves can indicate overwatering. A layer of mulch, like pine straw or wood chips, helps retain moisture and suppress weeds.

While not always necessary, staking your poblano pepper plants is a good idea, especially as they get larger and start producing heavy fruit. These plants can get quite bushy, and the weight of the peppers can sometimes cause branches to snap.

Use sturdy stakes, like bamboo or metal, and insert them into the ground near the base of the plant at transplant time. As the plant grows, gently tie the branches to the stakes with soft twine or plant ties. This provides support and prevents the plant from toppling over.

Pinch off any early flowers that appear on your poblano pepper plants. This encourages the plant to focus its energy on vegetative growth, resulting in a stronger, more productive plant later on. Once the plant is established, you can let the flowers develop into peppers.

Also, prune out any interior branches that are crowded or crossing each other. This improves airflow around the leaves, which is especially important in our humid climate to prevent fungal diseases. As the first frost approaches in early December, 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 poblano peppers from late May through mid-July, about 80 days after transplanting. Look for peppers that are dark green, glossy, and about 4-6 inches long. They should feel firm to the touch.

To harvest, use pruning shears or a sharp knife to cut the pepper from the plant, leaving a small piece of stem attached. Regular harvesting encourages the plant to continue producing more peppers. If you want to make dried ancho peppers, let the poblanos turn red on the vine before harvesting.

As the first frost approaches in early December, harvest any remaining peppers, even if they are still green. These can be ripened indoors by placing them in a paper bag with a ripe banana or apple. The ethylene gas released by the fruit will help them ripen.

Here are some common issues you might face growing poblanos in Florida:

Blossom Drop

• What it looks like: Flowers fall off without setting fruit, or small fruit turns yellow and drops. The plant itself looks healthy.
• What causes it: Temperature stress is the main culprit. Here in Florida, our nights can stay too warm in the summer. Also, low humidity (rare here), excess nitrogen, or poor pollination can cause this.
• How to fix/prevent it: Be patient – fruit set usually resumes when temperatures moderate. Provide afternoon shade during extreme heat. Keep plants well-watered, but avoid over-fertilizing with nitrogen. Hand-pollinate if needed.

Aphids

• What it looks like: Clusters of tiny green, black, or white insects on stems and undersides of leaves. You might also see sticky honeydew residue and curled or distorted new growth.
• What causes it: These sap-sucking pests reproduce rapidly, especially in warm weather. Ants often farm them for their honeydew.
• How to fix/prevent it: A strong spray of water can knock them off. Encourage beneficial insects like ladybugs. Insecticidal soap or neem oil works well for heavy infestations. Avoid over-fertilizing with nitrogen, which attracts them.

Pepper Maggots

• What it looks like: Small, worm-like larvae tunneling inside the peppers. You might see small entry holes or distorted fruit.
• What causes it: These are the larvae of the pepper maggot fly, which lays its eggs on the developing peppers.
• How to fix/prevent it: Use sticky traps to catch the adult flies. Remove and destroy any infested peppers. Row covers can prevent the flies from laying eggs on the plants. Insecticides labeled for pepper maggot control can be used, but follow the instructions carefully.

Sunscald

• What it looks like: White, papery patches on the fruit exposed to direct sun. These areas can blister and become susceptible to rot.
• What causes it: Intense, direct sunlight on the fruit, usually after leaves are lost to disease or over-pruning.
• How to fix/prevent it: Avoid over-pruning 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.

Florida Specific Challenges: Our high humidity and wet summers create a perfect environment for fungal diseases like blight and powdery mildew. Proper spacing, good airflow, and preventative fungicide applications can help. Also, nematodes can be a problem in our sandy soil. Choose nematode-resistant varieties if possible, and amend your soil with organic matter.

Good companions for poblano peppers in Florida include tomatoes, basil, carrots, and onions. Tomatoes provide some shade during the hottest part of the day, while basil is said to repel pests. Carrots help loosen the soil, and onions deter certain insects.

Avoid planting fennel and kohlrabi near your poblanos. Fennel inhibits the growth of many plants, and kohlrabi can attract pests that also affect peppers. Choose your companions wisely to create a thriving and productive garden.