coronavirus
White Rot in Blackcurrant
How to identify and treat white rot in Blackcurrant.
potted_plant
Blackcurrant care requirements
water
Keep soil consistently moist during growing season; mulch to retain moisture in hot climates
soil
Rich, fertile soil with good drainage and high organic matter; slightly acidic pH (6.0–6.5) optimal
light
Full sun to partial shade; 4+ hours of sun; tolerates shade better than other Ribes species
symptoms
Symptoms to look for in Blackcurrant
- fiber_manual_recordYellowing and wilting of foliage, especially on onions and garlic
- fiber_manual_recordFluffy white fungal growth around the base and roots
- fiber_manual_recordSmall black sclerotia embedded in the white growth and rotted bulb tissue
help
Common causes in Blackcurrant
Caused by the soil-borne fungus Sclerotium cepivorum, which can persist as sclerotia in soil for many years and is triggered into growth by chemical signals from allium roots.
healing
How to treat white rot in Blackcurrant
There is no effective treatment once plants are infected; remove and destroy affected plants and surrounding soil where practical to limit sclerotia buildup.
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Preventing white rot in Blackcurrant
Avoid growing alliums in known infected ground for as long as possible, use certified clean sets or seed, and avoid moving contaminated soil between growing areas.