Why Are My Flowers Falling Off?
Stop blossom drop and get your plants fruiting again
Top Causes of Blossom Drop
Temperature stress: Too hot (>90°F day) or too cold (<55°F night)
Inconsistent watering: Drought stress or overwatering
Over-fertilizing: Too much nitrogen promotes leaves over fruit
Poor pollination: No pollinators or no air movement
How to Fix Blossom Drop
Manage Temperature
Provide afternoon shade during heat waves. Use shade cloth (30-40%) when temps exceed 90°F. Mulch heavily to keep roots cool. Water in the morning to reduce heat stress.
Water Consistently
Keep soil evenly moist but not waterlogged. Inconsistent moisture causes stress that triggers flower drop. Use self-watering containers for consistent moisture.
Help Pollination
Gently shake plants daily to help pollen release. Use a small paintbrush to transfer pollen between flowers. Ensure good air circulation around plants.
Frequently Asked Questions
Why do tomato flowers fall off without making fruit?
Tomato blossom drop is usually caused by temperature stress. Flowers drop when nighttime temps stay above 75°F or below 55°F, or daytime temps exceed 90°F. High humidity, drought stress, and over-fertilizing with nitrogen also cause drop. The plant prioritizes survival over reproduction under stress.
How do I stop pepper flowers from falling off?
Peppers are even more sensitive to temperature than tomatoes. Keep nighttime temps above 60°F and daytime below 90°F. Ensure consistent watering, avoid over-fertilizing, and consider using shade cloth during heat waves. Hot peppers are generally more tolerant than sweet peppers.
Does lack of pollination cause flower drop?
Yes, unpollinated flowers eventually drop. This is common with indoor plants or during periods when pollinator activity is low. Hand pollinate by gently shaking plants or using a small brush to transfer pollen. Good air circulation also helps pollen movement.
Will my plant produce more flowers after blossom drop?
Yes! Once stress conditions improve, healthy plants will produce new flowers. Keep providing good care, and when temperatures moderate or stress is relieved, flowering will resume and fruit will set normally.