Cottonball
Abiotic (symptom)
13 host plants · Abiotic
Last updated
Cottonball fungus produces fluffy white spore masses on infected plants and fruit. You see cotton-like growth on affected tissues. The fungus affects fruit quality and appearance significantly. Remove infected material and improve growing conditions through better air circulation.
Cultural management is your first line: remove infected material, clean up debris, and improve the growing environment to make conditions less favorable for the pathogen. Avoid wounding plants during maintenance, as many pathogens enter through fresh cuts. Chemical options are available for severe cases, but they work best as preventive treatments applied before symptoms appear.
Quick Reference
Agent Type
abiotic
Causal Agent
Abiotic (symptom)
Host Plants
13
Host Plants (13)
Cotoneaster apiculatus Cranberry Cotoneaster Vaccinium angustifolium Lowbush Blueberry Vaccinium corymbosum Highbush Blueberry Vaccinium crassifolium Creeping Blueberry, Thick-leaved Whortlberry Vaccinium macrocarpon Cranberry American Cranberry Vaccinium membranaceum Big Huckleberry, Mountain Huckleberry Thinleaf Huckleberry Vaccinium moupinense Himalayan Blueberry Vaccinium ovalifolium Oval-leaf Blueberry Vaccinium ovatum Box Huckleberry, Evergreen Huckleberry Vaccinium parvifolium Red Huckleberry, Red Whortleberry Vaccinium sikkimense Sikkim Blueberry Vaccinium uliginosum Bog Blueberry, Bog Bilberry Vaccinium vitis Vaccinium vitis
Data Maturity Baseline Extension data. Expert review underway.