Cubanelle Pepper in Zone 8B — Florida

Cubanelle peppers are a fantastic choice for Florida gardeners. Their mild, sweet flavor and thin walls make them perfect for frying, stuffing, or adding to salsas. Plus, growing your own peppers in our reversed seasons is incredibly satisfying, especially when you're enjoying fresh peppers while the rest of the country is bundled up.

Our subtropical climate definitely presents some challenges with humidity and soil nematodes. But, with careful timing and the right techniques, you can absolutely enjoy a bountiful harvest of Cubanelle peppers. Our long, 303-day growing season gives you a solid window of opportunity.

Starting your Cubanelle pepper seeds indoors from late December through mid January gives them a head start before our spring weather kicks in. This is about 8 weeks before you'll want to transplant them outside. Remember, our Florida gardening calendar is different, so we start warm-season crops earlier.

Use seed trays with a good seed-starting mix. Keep them warm—a heat mat helps—and provide plenty of light with grow lights. Bottom watering is the way to go; set the tray in a shallow dish of water and let the soil absorb it. This helps prevent damping-off disease, which can be a problem in our humid climate.

Transplant your Cubanelle pepper seedlings outdoors from early to late March. Before you do, harden them off by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the sun and wind.

Space the plants 18-24 inches apart in well-drained soil. Keep an eye on the weather forecast; late cold snaps are always possible even though our spring starts earlier. If a freeze threatens, cover your young plants to protect them.

Cubanelle peppers need consistent moisture, but they don't like soggy feet. In Florida's sandy soil, that means you'll be watering more often than gardeners in other regions. During the hotter, drier periods of spring, you might need to water every other day.

Stick your finger about 2 inches into the soil; if it feels dry, it's time to water. Aim for about 1 inch of water per week, but adjust based on rainfall and temperature. Water at the base of the plant to avoid wetting the leaves, which can encourage fungal diseases in our humid environment.

Yellowing leaves can be a sign of overwatering, while wilting, especially in the afternoon, indicates underwatering. A good layer of mulch, like pine straw or wood chips, will help retain moisture and suppress weeds.

Cubanelle peppers are bush-type plants, and while they don't absolutely require support, a little help goes a long way. When the plants are loaded with peppers, they can get top-heavy and the branches can break, especially during our summer thunderstorms.

Simple stakes work best. Install them at planting time, a few inches away from the stem, and gently tie the plant to the stake as it grows. Soft twine or plant ties are ideal to avoid damaging the stems.

Pinching off the early flowers on your Cubanelle pepper plants encourages them to focus on vegetative growth, resulting in stronger plants and more peppers later in the season. Simply snip off the first few flower buds that appear.

These plants are productive and respond well to regular harvesting, so keep picking those peppers! As we approach mid- December and the threat of our first frost looms, you can remove any remaining small peppers that likely won't ripen in time. This encourages the plant to put its energy into ripening the larger peppers that are already on the vine.

You can expect your first harvest of Cubanelle peppers from early May through late June, about 70 days after transplanting. Look for peppers that are pale yellow-green, thin-walled, and about 4-6 inches long. These are classic Italian frying peppers, and at this stage, they're perfect for cooking.

Gently twist or cut the peppers from the plant, being careful not to damage the stems. Regular harvesting encourages the plant to produce more peppers. As the weather cools down in late fall, keep an eye on the forecast. If a frost is coming, harvest any remaining peppers, even if they're not fully ripe. They will ripen indoors.

Cubanelle peppers can be prone to a few problems in Florida's climate:

Thin Walls Bruise Easily

• What it looks like: Dark spots or blemishes on the pepper skin, often appearing after handling.
• What causes it: The thin walls of Cubanelle peppers make them susceptible to bruising during picking, transport, or even heavy rainfall.
• How to fix/prevent it: Handle peppers gently during harvest and transport. Store them carefully to avoid pressure. Mulching can help prevent soil splash-up during heavy rains.

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: The combination of hot heat, very-high humidity, and our wet-summer rainfall can create the perfect environment for fungal diseases on your Cubanelle peppers. Make sure to space plants properly for good air circulation and avoid overhead watering. Soil nematodes are also prevalent in Florida, so consider planting in raised beds or containers with nematode-free soil.

Good companions for Cubanelle peppers include tomatoes, basil, carrots, and onions. Tomatoes provide shade and support. Basil repels pests and improves pepper flavor. Carrots loosen the soil and deter nematodes. Onions also deter pests and have antifungal properties.

Avoid planting fennel and brassicas (like cabbage and broccoli) near your Cubanelle peppers. Fennel inhibits the growth of many plants. Brassicas can attract pests that also affect peppers. Planting the right companions can help your peppers thrive in our Florida garden.