Troubleshooting
Rocambole Garlic problems — and how to fix them
Rocambole Garlic (Allium sativum var. ophioscorodon 'German Red') 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.
Unremoved scapes shrink bulbs
Leaving the curling scape to flower diverts energy from the bulb, producing smaller heads. Snap scapes off once they curl (they're edible) to boost bulb size.
Winter rot from wet soil
Cloves planted into heavy, waterlogged ground rot before spring. Plant in free-draining beds and mulch to insulate without trapping standing water.
White rot (Sclerotium)
A persistent soil fungus that rots the base and coats it in white fluffy mould, devastating allium beds for years. Rotate alliums on a long cycle and never replant infected soil.
Poor bulbing without chill
Hardneck garlic planted in spring or in mild-winter regions fails to vernalise and stays as a single round. Plant in autumn for the needed cold period.
Prevent rocambole garlic problems before they start
Most rocambole garlic issues are care-mismatch, not bad luck. Dial in the basics:
Looking for rocambole garlic in general rather than its problems? Read the full rocambole garlic care guide — light, water, soil and feeding.
Rocambole Garlic problems — FAQ
Why is my rocambole garlic unremoved scapes shrink bulbs?
Leaving the curling scape to flower diverts energy from the bulb, producing smaller heads. Snap scapes off once they curl (they're edible) to boost bulb size.
Why is my rocambole garlic winter rot from wet soil?
Cloves planted into heavy, waterlogged ground rot before spring. Plant in free-draining beds and mulch to insulate without trapping standing water.
Why is my rocambole garlic white rot (sclerotium)?
A persistent soil fungus that rots the base and coats it in white fluffy mould, devastating allium beds for years. Rotate alliums on a long cycle and never replant infected soil.
Why is my rocambole garlic poor bulbing without chill?
Hardneck garlic planted in spring or in mild-winter regions fails to vernalise and stays as a single round. Plant in autumn for the needed cold period.