Flower Drop, Poor Fruit Set
Symptoms – plants grow slowly; flowers form but drop off before fruit develops.
Solution - Peppers are warm weather plants, and need at least 6 hours of direct sun daily. They also need a long warm growing season, with daytime temperatures of 75-85°F and night time temperatures between 55-65°F. They grow slowly in cool weather and are frost-sensitive. The other possibility is the variety of pepper planted is not adapted to your area – check to be sure the variety will grow in your area.
Wait for warmer weather and see if the peppers grow and set fruit better, or replant when weather warms up. Be sure to plant varieties adapted for your climate.
Blossom end rot is a physiological disease that is caused by environmental conditions, not a microorganism. The disease is not associated with soil contact or with damage to other plant parts.
Symptoms – A large, water-soaked spot develops at the end of ripening peppers. The spot gets larger, turns black and mold may develop.
Adult pepper weevils are small, dark, robust snout beetles with beaks longer than their head and thorax. Larvae and pupae can be found inside fruit.
Damage - Buds or fruits turn yellow, and may drop from the plant. The remaining pods may become misshapen and develop yellow or red blotches. The pods are marred by holes.
Solutions - Destroying pepper plants as soon as the harvest is over should reduce weevil problems the following year. Rotate crops, not replanting where other nightshade family members have grown. The nightshade family includes peppers, tomatoes, eggplant and white potatoes.
Read more about pest management for peppers.