Mandevilla Winter Care: Pruning, Dormancy & Spring Transition

Overwintering mandevilla requires induced dormancy, not continued growth. The goal is survival, not beauty.

Fall Preparation

1. High-phosphorus fertilizer (10-56-14) lightly — hardens plant
2. Leave outdoors until nights ~40°F
3. Prune hard to 12 inches above soil
4. Treat for pests before bringing in

Indoor Maintenance

• Maximum light (south window)
• Water minimally — keep dry side
• No fertilizer
• Expect ugly — leaf drop, weak growth normal
• Some use plastic bag in heated garage

Spring Wake-Up

Move out after frost. Winter growth WILL sunburn — this is expected. New growth will be strong.