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Overwintering guide

How to overwinter giant sequoia 'glaucum'

Verdict
Stays outside
When
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
Hardiness
Giant Sequoia 'Glaucum' is hardy to roughly USDA zone 6 — winter lows around -23°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 giant sequoia 'glaucum' in winter

Cutting giant sequoia 'glaucum' 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 giant sequoia 'glaucum' care

Overwintering giant sequoia 'glaucum' — FAQ

Does giant sequoia 'glaucum' need to come indoors for winter?

Giant Sequoia 'Glaucum' is hardy to roughly USDA zone 6 — winter lows around -23°C. That means it can stay outside all winter in most temperate gardens. Giant Sequoia 'Glaucum' 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 giant sequoia 'glaucum' for winter?

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

How often should I water giant sequoia 'glaucum' in winter?

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

What kills giant sequoia 'glaucum' over winter?

Cutting giant sequoia 'glaucum' 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.