Cubanelle Pepper in Zone 10B — Florida

Cubanelle peppers are a fantastic addition to your Florida garden. Their mild, sweet flavor and thin walls make them perfect for frying, stuffing, or adding to salsas. Plus, you'll get the satisfaction of harvesting your own peppers during our mild winter and spring, when the rest of the country is still dreaming of summer.

Sure, Florida gardening comes with its own set of challenges like humidity and sandy soil, but the reversed growing season gives us a unique advantage. By planting in fall, you'll be able to harvest these tasty peppers during the cooler months, taking advantage of our nearly year-round 360-day growing season.

Start your Cubanelle pepper seeds indoors from mid November through early December. This gives them about 8 weeks to get a head start before transplanting. Use seed trays or small pots filled with a good seed-starting mix.

Keep the soil consistently moist, but not soggy. Bottom watering is your friend here – set the trays in a shallow dish of water and let the soil soak it up. Place the trays in a warm spot (around 75-80°F) with plenty of light, and remember that our spring character is reversed, so start early to get ahead of the heat!

Transplant your Cubanelle pepper seedlings outdoors from mid January through mid February. Before transplanting, you'll want to harden them off. This means gradually exposing them to outdoor conditions for about a week.

Choose a sunny spot in your garden with well-drained soil. Space the plants 18-24 inches apart to give them plenty of room to grow. Keep an eye on the weather – even though it's generally mild, we can still get some cool snaps during this time.

Cubanelle peppers need moderate watering, especially here in Florida where the humidity can trick you. While we get plenty of rain, our sandy soil drains quickly, so don't assume the plants are getting enough moisture. During the cooler fall and winter months, aim for about 1 inch of water per week, either from rainfall or irrigation.

Use the "finger test" – stick your finger about 2 inches deep into the soil. If it feels dry, it's time to water. In the hotter, more humid spring, you might need to water more frequently. Water at the base of the plant to avoid getting the leaves wet, which can encourage fungal diseases in our humid climate.

Signs of underwatering include wilting leaves and dry soil. Overwatering can lead to yellowing leaves and root rot. A good layer of mulch, like pine straw or wood chips, will help retain moisture in the soil and suppress weeds.

Cubanelle peppers have a bushy growth habit, and while they don't necessarily *need* support, a little staking can be helpful, especially when they're laden with fruit. The peppers' thin walls make them a bit fragile. Bamboo stakes or tomato cages work well.

Install the support at planting time to avoid disturbing the roots later. As the plant grows, gently tie the stems to the support with soft twine. This will keep the peppers off the ground and prevent them from breaking the branches.

Pinching off the early flowers on your Cubanelle pepper plant can encourage more vigorous growth and lead to a larger harvest later on. Remove the flowers as soon as you see them appear, usually a few weeks after transplanting.

Throughout the season, regularly harvesting the peppers will also encourage the plant to produce more. As we approach late December and the possibility of a frost, you can remove any remaining small peppers to encourage the plant to focus its energy on ripening the larger ones.

You can expect your first harvest of Cubanelle peppers from late March through mid May, about 70 days after transplanting. The peppers are ready to harvest when they 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 branches. Regular harvesting will encourage the plant to continue producing. As the end of the season approaches and the temperatures start to cool down in late December, you can harvest any remaining green peppers and allow them to ripen indoors. They'll still develop their flavor, even if they don't get quite as sweet as those ripened on the vine.

Here are some common problems you might encounter with Cubanelle peppers in Florida:

Thin Walls Bruise Easily

• What it looks like: Dark spots or blemishes on the pepper skin, especially after handling or during windy conditions.
• What causes it: The delicate, thin skin of Cubanelle peppers makes them susceptible to bruising.
• How to fix/prevent it: Handle the peppers gently during harvesting and avoid overcrowding them in containers. Provide wind protection if possible.

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.

Florida Specific Challenges: Our hot, humid summers and wet-summer rainfall can create the perfect environment for fungal diseases to thrive on your Cubanelle peppers. Make sure to provide good air circulation around the plants and avoid overhead watering. Nematodes can also be a problem in our sandy soil, so consider using nematode-resistant varieties or amending your soil with organic matter.

Good companion plants for Cubanelle peppers include tomatoes, basil, carrots, and onions. Tomatoes provide shade and support, while basil repels pests and improves flavor. Carrots loosen the soil and deter nematodes, and onions also deter pests.

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. Companion planting can make a real difference in your Florida garden, helping your peppers thrive!