Overwintering guide
How to overwinter tall purple moor grass
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills tall purple moor grass in winter
Cutting tall purple moor grass 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 tall purple moor grass care
Overwintering tall purple moor grass — FAQ
Does tall purple moor grass need to come indoors for winter?
tall purple moor grass is hardy to roughly USDA zone 4 — winter lows around -34°C. That means it can stay outside all winter in most temperate gardens. tall purple moor grass 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 tall purple moor grass for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water tall purple moor grass in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills tall purple moor grass over winter?
Cutting tall purple moor grass 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.