Overwintering Angel's Trumpet (Brugmansia) in Cold Climates

Keeping Brugmansia Alive Through a Michigan Winter

Angel's trumpet (Brugmansia spp.) is a tropical shrub hardy only to Zone 9 (20°F / -7°C). In Michigan (Zone 5–6), it must be overwintered indoors.

Indoor Dormancy Method

1. Prune: Cut back to 12–18 inches, removing most foliage.
2. Pot: Use a container with drainage; well-draining mix (peat, perlite, compost).
3. Location: Cool basement (45–55°F / 7–13°C) with some light (e.g., near a window or under grow lights).
4. Water: Sparingly—only when soil is dry 2 inches down. Do not fertilize.
5. Monitor: Leaves may yellow and drop; this is normal. Stems should remain firm.

Spring Revival

In March–April, move to a warmer (65°F), brighter spot. Increase watering, begin dilute fertilizer. New growth will emerge from nodes. After last frost, harden off and move outside.

Cuttings for Insurance

Take 6–8 inch semi-hardwood cuttings in late summer, root in water or moist perlite, and overwinter as small plants. They require less space and can be shared.

Treat Brugmansia like fuchsias or geraniums: cool, dry, dormant rest ensures survival.