Overwintering guide
How to overwinter cape leadwort (blue plumbago)
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 cape leadwort (blue plumbago) in winter
Leaving cape leadwort (blue plumbago) 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 cape leadwort (blue plumbago) care
Overwintering cape leadwort (blue plumbago) — FAQ
Does cape leadwort (blue plumbago) need to come indoors for winter?
Cape Leadwort (Blue Plumbago) 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. Cape Leadwort (Blue Plumbago) 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 cape leadwort (blue plumbago) for winter?
Mulch and move pots into shelter in late autumn, before the first hard frosts.
How often should I water cape leadwort (blue plumbago) 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 cape leadwort (blue plumbago) over winter?
Leaving cape leadwort (blue plumbago) 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.