Growli

Overwintering guide

How to overwinter slender silhouette sweetgum

Verdict
Stays outside
When
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
Hardiness
Slender Silhouette Sweetgum is hardy to roughly USDA zone 5 — winter lows around -29°C. That means it can stay outside all winter in most temperate gardens.

Winter watering

No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.

The mistake that kills slender silhouette sweetgum in winter

Cutting slender silhouette sweetgum hard back in autumn "to tidy up". That removes the growth that shelters the crown, and on some plants removes next season's flower buds entirely.

More slender silhouette sweetgum care

Overwintering slender silhouette sweetgum — FAQ

Does slender silhouette sweetgum need to come indoors for winter?

Slender Silhouette Sweetgum is hardy to roughly USDA zone 5 — winter lows around -29°C. That means it can stay outside all winter in most temperate gardens. Slender Silhouette Sweetgum is properly hardy and overwinters outside without fuss. Tidy away anything dead or diseased, apply a mulch over the crown to steady soil temperatures, and otherwise leave it alone — many hardy plants actually need a cold period to flower and grow well the following year. Save hard pruning for the right season rather than doing it in autumn.

When should I move slender silhouette sweetgum for winter?

Tidy and mulch in late autumn; leave the plant undisturbed until spring.

How often should I water slender silhouette sweetgum in winter?

No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.

What kills slender silhouette sweetgum over winter?

Cutting slender silhouette sweetgum hard back in autumn "to tidy up". That removes the growth that shelters the crown, and on some plants removes next season's flower buds entirely.