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Overwintering guide

How to overwinter wilmot's dinteranthus

Verdict
Bring indoors
When
Bring indoors when nights start dropping below about 10°C, ahead of the first frost.
Hardiness
Wilmot's Dinteranthus is hardy to roughly USDA zone 10 — winter lows around -1°C. That means it will not survive frost and needs to come inside.

Winter watering

Cut watering right back — wilmot's dinteranthus 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 wilmot's dinteranthus in winter

Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and wilmot's dinteranthus rots from the base.

More wilmot's dinteranthus care

Overwintering wilmot's dinteranthus — FAQ

Does wilmot's dinteranthus need to come indoors for winter?

Wilmot's Dinteranthus is hardy to roughly USDA zone 10 — winter lows around -1°C. That means it will not survive frost and needs to come inside. Wilmot's Dinteranthus 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 wilmot's dinteranthus for winter?

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

How often should I water wilmot's dinteranthus in winter?

Cut watering right back — wilmot's dinteranthus uses far less while growth slows, and cold, wet compost is the usual cause of winter root rot. Stop feeding until spring.

What kills wilmot's dinteranthus over winter?

Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and wilmot's dinteranthus rots from the base.