White rot of alliums: how to spot, prevent and treat it disease
How do you spot white rot of alliums?
Growth is stunted and the leaves yellow and die. Pulled up, the underground part is coated in a white to grey mould or crust holding thousands of tiny black fruiting bodies.
How do you prevent white rot of alliums?
Plant only stock confirmed healthy. Pull out infected plants and take them away, not onto the compost. The fruiting bodies stay in the soil for years, so do not plant alliums in an infected bed for four to five years. Rotation on its own does not wipe the disease out.
On a particular plant
garlic: Never plant garlic bought at a grocery shop.
What works against white rot of alliums?
For the home garden there is no product. The measure is the bed: remove the infected plants, work compost into the soil and leave a long break without alliums.
Which plants get white rot of alliums? 4
Vegetables 3
Herbs 1
Sources: EPPO Global Database, University of Maryland Extension
Checked on 17 August 2026.