Troubleshooting
Hosta 'Invincible' problems — and how to fix them
Hosta 'Invincible' (Hosta 'Invincible') 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
The most common pest; irregular holes appear in leaves. Use organic slug pellets, copper tape barriers, or overnight hand-picking. Hostas with thicker, heavily textured foliage tend to be more resistant.
Crown rot
Caused by poorly draining or waterlogged soil combined with overhead watering. Ensure water reaches the roots, not the crown, and improve drainage with organic matter.
Leaf scorch
Brown, papery leaf edges or bleached patches indicate too much direct sun. Move to a more shaded position or provide afternoon shade.
Vine weevil
Grubs feed on roots, causing wilting and collapse. Apply nematode-based biological control to the soil in late summer or early autumn when soil temperature is above 5°C.
Foliar nematodes
Cause brown streaks between leaf veins. Remove and destroy affected leaves; avoid overhead watering which spreads the pathogen.
Prevent hosta 'invincible' problems before they start
Most hosta 'invincible' issues are care-mismatch, not bad luck. Dial in the basics:
Hosta 'Invincible' problems — FAQ
Why is my hosta 'invincible' slug and snail damage?
The most common pest; irregular holes appear in leaves. Use organic slug pellets, copper tape barriers, or overnight hand-picking. Hostas with thicker, heavily textured foliage tend to be more resistant.
Why is my hosta 'invincible' crown rot?
Caused by poorly draining or waterlogged soil combined with overhead watering. Ensure water reaches the roots, not the crown, and improve drainage with organic matter.
Why is my hosta 'invincible' leaf scorch?
Brown, papery leaf edges or bleached patches indicate too much direct sun. Move to a more shaded position or provide afternoon shade.
Why is my hosta 'invincible' vine weevil?
Grubs feed on roots, causing wilting and collapse. Apply nematode-based biological control to the soil in late summer or early autumn when soil temperature is above 5°C.
Why is my hosta 'invincible' foliar nematodes?
Cause brown streaks between leaf veins. Remove and destroy affected leaves; avoid overhead watering which spreads the pathogen.