Mandevilla Flower Drop: Watering and Overwintering

Mandevilla bloomed heavily all spring/summer, then flowers started dropping prematurely. Owner in Rocky Mountains plans to overwinter indoors.

Flower Drop Causes

• Too wet: Soggy soil – improve drainage, remove saucer.
• Too dry: Repot larger, water more frequently.

Overwintering Indoors

1. Cut back to 12 inches.
2. Keep cool (50–60°F), bright light.
3. Water sparingly – just enough to prevent shriveling.
4. No fertilizer until spring.

Resources

• P. Allen Smith guide
• JeffCo Gardener blog