Overwintering Gardenias in Zone 6: Complete Guide

I live in zone 6 and want to save a gift gardenia. What should I do?

Gardenia Hardiness Reality

Gardenia jasminoides is not cold-hardy below zone 7. In zone 6, it must come indoors for winter.

If It's in a Container (Best Case)

1. Move it inside before frost—to a bright, cool room (55–65°F ideal), like a sunroom, enclosed porch, or home office kept around 70°F.
2. Light is critical: Place near a south/west window or under grow lights.
3. Water sparingly: Once a month is usually enough; keep soil barely moist.
4. No fertilizer until spring.
5. Spring restart: Increase watering, apply half-strength liquid fertilizer to jump-start growth.

If It's Planted in Ground

Dig it up (if small), pot in lime-free (ericaceous) compost, and follow the indoor routine above.

Yellowing Leaves in Fall?

Normal! As temperatures drop, gardenias shed older leaves. Bring it inside promptly. Your 70°F office is fine—no need to cool it further. Just provide bright light and minimal water.