Troubleshooting Pepper Problems: Pests and Physiological Issues

Even with the best soil and sunlight, your pepper plants may encounter challenges. Understanding these three common issues will help you act quickly to save your harvest.

Managing Aphids Aphids are small, soft-bodied insects that cluster on the undersides of leaves or near tender new growth. They suck sap, often causing leaves to curl and yellow. If you spot these pests, follow these steps:

1. Use a strong stream of water from your garden hose to blast them off the foliage.
2. Apply insecticidal soap or neem oil, ensuring you hit the undersides of the leaves.
3. Encourage beneficial insects like ladybugs, which are natural predators of aphids.

Preventing Blossom Drop If your pepper plants flower but the blossoms fall off before setting fruit, you are likely dealing with blossom drop. This is usually caused by environmental stress when daytime temperatures consistently exceed 90°F or nighttime temperatures drop below 60°F. Humidity levels that are too high or too low can also disrupt pollination.

Maintain consistent moisture and consider using 30% shade cloth during the peak of summer heatwaves to stabilize the microclimate around your plants.

Addressing Sunscald Sunscald appears as light-colored, blistered, or papery patches on the fruit, usually on the side most exposed to direct afternoon sun. It occurs when peppers are suddenly exposed to intense light, often because the plant lacks enough foliage to shade its own fruit. To prevent this, ensure your plants are healthy and lush. Avoid aggressive pruning of interior leaves during the hottest part of summer. If you live in very hot climates, such as USDA zones 9 or 10, provide partial afternoon shade to prevent the fruit skin from breaking down under extreme UV exposure. Regular monitoring is your best defense against these issues; spend a few minutes each week inspecting your plants to catch problems while they are still manageable.