Troubleshooting
Blue Ice bog rosemary problems — and how to fix them
Blue Ice bog rosemary (Andromeda polifolia 'Blue Ice') 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.
Fading of blue-grey leaf colour
The glaucous colouration fades in shade, alkaline soil, or excessive nitrogen conditions. Grow in full sun, use only rainwater, maintain acidic pH, and limit feeding to preserve the characteristic ice-blue foliage.
Failure to flower
Poor flowering is usually caused by insufficient light, late pruning that removes next year's flower buds, or drought stress at bud set (late summer). Prune only immediately after flowering, maintain full sun, and keep soil consistently moist.
Crown rot in poorly structured wet soil
Though the plant needs wet soil, waterlogged, compacted conditions without oxygen movement cause crown and root rot. Ensure the bog planting or container medium has some structural open porosity — sphagnum moss and bark grit help prevent anaerobic compaction.
Prevent blue ice bog rosemary problems before they start
Most blue ice bog rosemary issues are care-mismatch, not bad luck. Dial in the basics:
Blue Ice bog rosemary problems — FAQ
Why is my blue ice bog rosemary fading of blue-grey leaf colour?
The glaucous colouration fades in shade, alkaline soil, or excessive nitrogen conditions. Grow in full sun, use only rainwater, maintain acidic pH, and limit feeding to preserve the characteristic ice-blue foliage.
Why is my blue ice bog rosemary failure to flower?
Poor flowering is usually caused by insufficient light, late pruning that removes next year's flower buds, or drought stress at bud set (late summer). Prune only immediately after flowering, maintain full sun, and keep soil consistently moist.
Why is my blue ice bog rosemary crown rot in poorly structured wet soil?
Though the plant needs wet soil, waterlogged, compacted conditions without oxygen movement cause crown and root rot. Ensure the bog planting or container medium has some structural open porosity — sphagnum moss and bark grit help prevent anaerobic compaction.