Troubleshooting
Hosta 'Island Charm' problems — and how to fix them
Hosta 'Island Charm' (Hosta 'Island Charm') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Slug and snail damage
Variegated hostas are particularly favoured by slugs. Use iron phosphate slug pellets, set beer traps, or introduce natural predators such as ground beetles and hedgehogs.
Leaf scorch
The pale margins are susceptible to sun scorch. Relocate plants receiving more than 4 hours of direct sunlight to a shadier position.
Crown rot
Waterlogging and direct crown watering promote fungal rot. Water at soil level and ensure drainage is not impeded by compacted soil.
Reversion of variegation
Occasionally shoots with all-green leaves emerge; these are more vigorous and should be removed promptly at the base to prevent them from out-competing the variegated growth.
Vine weevil
Grubs sever roots below soil level, causing sudden wilting. Apply pathogenic nematodes (Steinernema kraussei) in late summer when soil is warm enough.
Prevent hosta 'island charm' problems before they start
Most hosta 'island charm' issues are care-mismatch, not bad luck. Dial in the basics:
Hosta 'Island Charm' problems — FAQ
Why is my hosta 'island charm' slug and snail damage?
Variegated hostas are particularly favoured by slugs. Use iron phosphate slug pellets, set beer traps, or introduce natural predators such as ground beetles and hedgehogs.
Why is my hosta 'island charm' leaf scorch?
The pale margins are susceptible to sun scorch. Relocate plants receiving more than 4 hours of direct sunlight to a shadier position.
Why is my hosta 'island charm' crown rot?
Waterlogging and direct crown watering promote fungal rot. Water at soil level and ensure drainage is not impeded by compacted soil.
Why is my hosta 'island charm' reversion of variegation?
Occasionally shoots with all-green leaves emerge; these are more vigorous and should be removed promptly at the base to prevent them from out-competing the variegated growth.
Why is my hosta 'island charm' vine weevil?
Grubs sever roots below soil level, causing sudden wilting. Apply pathogenic nematodes (Steinernema kraussei) in late summer when soil is warm enough.