Troubleshooting
Hosta 'Krossa Regal' problems — and how to fix them
Hosta 'Krossa Regal' (Hosta 'Krossa Regal') 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 damage
The upright habit reduces contact with ground-level slugs but does not eliminate risk. Use iron phosphate pellets and check inside the vase-shaped crown for hiding slugs.
Sun bleaching of blue bloom
The powdery bloom is damaged irreversibly by strong sun. Ensure consistent shade from midday onward to preserve the blue-grey colour.
Scape lodging
The exceptionally tall scapes can topple in wind. Support with a stake in exposed positions or site behind a windbreak.
Hosta virus X
Mosaic discolouration and distorted leaves. Remove and destroy infected plants; sterilise cutting tools with methylated spirits.
Crown rot
Waterlogged soils in winter damage the dormant crown. Plant on a slight rise or in well-structured, free-draining beds.
Prevent hosta 'krossa regal' problems before they start
Most hosta 'krossa regal' issues are care-mismatch, not bad luck. Dial in the basics:
Hosta 'Krossa Regal' problems — FAQ
Why is my hosta 'krossa regal' slug damage?
The upright habit reduces contact with ground-level slugs but does not eliminate risk. Use iron phosphate pellets and check inside the vase-shaped crown for hiding slugs.
Why is my hosta 'krossa regal' sun bleaching of blue bloom?
The powdery bloom is damaged irreversibly by strong sun. Ensure consistent shade from midday onward to preserve the blue-grey colour.
Why is my hosta 'krossa regal' scape lodging?
The exceptionally tall scapes can topple in wind. Support with a stake in exposed positions or site behind a windbreak.
Why is my hosta 'krossa regal' hosta virus x?
Mosaic discolouration and distorted leaves. Remove and destroy infected plants; sterilise cutting tools with methylated spirits.
Why is my hosta 'krossa regal' crown rot?
Waterlogged soils in winter damage the dormant crown. Plant on a slight rise or in well-structured, free-draining beds.