Pepperoncini in Zone 10B — Florida

Pepperoncini peppers are a fantastic addition to any Florida garden. Their mild, tangy flavor makes them perfect for pickling, salads, and adding a touch of zest to your favorite dishes. Plus, the satisfaction of harvesting your own peppers, especially when you can grow them almost year-round in our subtropical climate, is hard to beat.

Sure, Florida gardening has its quirks – humidity, nematodes, and the occasional hurricane. But with the right timing, particularly by taking advantage of our long, 360-day growing season, you can successfully grow these peppers and enjoy a bountiful harvest.

Here in Florida, we start our pepperoncini seeds indoors from mid November through early December, about eight weeks before you'll want to put them in the ground. Use seed trays filled with a good seed-starting mix. Keep them warm – a heat mat can really help – and make sure they get plenty of light.

Bottom watering is a great technique for starting seeds. Just set the tray in a shallow dish of water and let the soil soak it up from the bottom. This helps prevent damping-off, a common problem with our high humidity. Remember, our spring is reversed here, so starting early is key to getting a jump on the season.

Transplant your pepperoncini seedlings outdoors from mid January through mid February. 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, which can be intense even in January.

Space them about 18-24 inches apart to give them plenty of room to grow. Keep an eye on the weather – those occasional cold snaps can still happen, so be ready to cover them if temperatures dip too low.

Pepperoncini peppers need moderate watering, especially in our Florida climate. While they aren't drought-tolerant, constantly soggy soil is a recipe for disaster with our humidity. During our drier fall and winter months, aim for about 1 inch of water per week, increasing to 1.5 inches during our hot springs.

Use the "finger test" – stick your finger about 2 inches into the soil. If it feels dry, it's time to water. Water at the base of the plants to avoid wetting the foliage, which can encourage fungal diseases in our humid air.

Also, a light layer of mulch can help retain moisture and suppress weeds, but don't overdo it. Remember, slightly wrinkled skin on the peppers is normal and not necessarily a sign of underwatering. During our wet summers, you may not need to water at all, unless we're experiencing a dry spell. Just let Mother Nature take care of it.

While pepperoncini plants are relatively compact and bushy, they can sometimes benefit from a little support, especially if they're loaded with peppers. A simple tomato cage or sturdy stakes work well. Install them at planting time to avoid disturbing the roots later on.

Gently tie the main stems to the support as needed, using soft twine or plant ties. This will help prevent the branches from breaking under the weight of the fruit.

Pruning pepperoncini is pretty straightforward. Pinch off any early flowers to encourage the plant to focus on vegetative growth. This will result in a stronger, more productive plant later on.

Throughout the season, harvest your peppers frequently. This encourages the plant to keep producing more. As our first frost approaches around late December, you can prune back the plant to encourage a final flush of growth before the cold weather sets in.

You can expect your first pepperoncini harvest from early April through mid May. The peppers are ready to pick when they're yellow-green and about 2-3 inches long, perfect for pickling. You can also let them ripen to red for a sweeter flavor.

Gently twist or snip the peppers off the plant, being careful not to damage the branches. Frequent harvesting encourages continuous production. As the end of the season approaches and frost threatens, harvest any remaining peppers, even if they're not fully ripe. They'll ripen indoors in a warm spot.

Pepperoncini peppers, like any plant, can have their share of problems here in Florida. Here are a few to watch out for:

Over-ripening:

• What it looks like: Peppers become overly soft, wrinkled, and may develop dark spots.
• What causes it: Forgetting to harvest regularly, especially during our warm springs.
• How to fix/prevent it: Check your plants daily and harvest peppers as soon as they reach the desired size and color.

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 Drop:

• What it looks like: Flowers fall off without setting fruit. Small fruit yellows and drops. Plant looks healthy but produces no fruit.
• What causes it: Temperature stress. Peppers and tomatoes don't set fruit well when nights stay above 75°F or days exceed 95°F. Also caused by low humidity, excess nitrogen, or poor pollination.
• How to fix/prevent it: Be patient — fruit set resumes when temperatures moderate. Provide afternoon shade during extreme heat. Keep plants well-watered. Avoid excess nitrogen. Try hand-pollination.

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

Companion planting can really help your pepperoncini thrive. Tomatoes make excellent companions because they enjoy similar growing conditions and can provide some shade during our hot afternoons. Basil is another great choice, as it repels many common pests and attracts beneficial insects.

Carrots and onions are also good companions, as they help deter soil pests and improve soil health. Avoid planting pepperoncini near fennel, as it can inhibit their growth. Also, avoid brassicas like cabbage and broccoli, as they compete for the same nutrients.