Growli

Overwintering guide

How to overwinter callous-lipped slipper orchid

Verdict
Bring indoors
When
Bring indoors when nights start dropping below about 10°C, ahead of the first frost.
Hardiness
Callous-lipped Slipper Orchid is hardy to roughly USDA zone 11 — winter lows around 4°C. That means it will not survive frost and needs to come inside.

Winter watering

Cut watering right back — callous-lipped slipper orchid uses far less while growth slows, and cold, wet compost is the usual cause of winter root rot. Stop feeding until spring.

The mistake that kills callous-lipped slipper orchid in winter

Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and callous-lipped slipper orchid rots from the base.

More callous-lipped slipper orchid care

Overwintering callous-lipped slipper orchid — FAQ

Does callous-lipped slipper orchid need to come indoors for winter?

Callous-lipped Slipper Orchid is hardy to roughly USDA zone 11 — winter lows around 4°C. That means it will not survive frost and needs to come inside. Callous-lipped Slipper Orchid is frost-tender, so overwintering means bringing it inside and letting it rest rather than pushing it to grow. Move it indoors well before the first frost, give it the brightest spot you have (light levels indoors drop sharply in winter), and keep it away from both cold window glass and hot radiators — the swing between the two does more damage than the cold itself.

When should I move callous-lipped slipper orchid for winter?

Bring indoors when nights start dropping below about 10°C, ahead of the first frost.

How often should I water callous-lipped slipper orchid in winter?

Cut watering right back — callous-lipped slipper orchid uses far less while growth slows, and cold, wet compost is the usual cause of winter root rot. Stop feeding until spring.

What kills callous-lipped slipper orchid over winter?

Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and callous-lipped slipper orchid rots from the base.