Overwintering guide
How to overwinter pompon dahlia 'jowey mirella'
Winter watering
Water rarely, and only in dry spells — winter wet is a bigger risk than winter cold. Make sure containers drain freely.
The mistake that kills pompon dahlia 'jowey mirella' in winter
Leaving pompon dahlia 'jowey mirella' in a pot standing in a saucer of water. Waterlogged compost freezes solid around the roots and kills plants that would have survived the cold perfectly well.
More pompon dahlia 'jowey mirella' care
Overwintering pompon dahlia 'jowey mirella' — FAQ
Does pompon dahlia 'jowey mirella' need to come indoors for winter?
Pompon Dahlia 'Jowey Mirella' is hardy to roughly USDA zone 8 — winter lows around -12°C. That means it survives outside in mild areas, but wants shelter in a hard winter. Pompon Dahlia 'Jowey Mirella' can stay outside over winter in most areas, but appreciates some protection in a cold snap. Mulch generously over the root zone, move containers against a sheltered wall (pots freeze far harder than open ground), and have horticultural fleece ready for the worst nights. The roots are what you are protecting — top growth can be sacrificed and regrown.
When should I move pompon dahlia 'jowey mirella' for winter?
Mulch and move pots into shelter in late autumn, before the first hard frosts.
How often should I water pompon dahlia 'jowey mirella' in winter?
Water rarely, and only in dry spells — winter wet is a bigger risk than winter cold. Make sure containers drain freely.
What kills pompon dahlia 'jowey mirella' over winter?
Leaving pompon dahlia 'jowey mirella' in a pot standing in a saucer of water. Waterlogged compost freezes solid around the roots and kills plants that would have survived the cold perfectly well.