Dr. Phyto

cranberry

Vaccinium macrocarpon

Diseases & pests on this plant

• Cranberry cottonball (hard rot)Monilinia oxycocci

  Shoots blight and wilt with a tan, cottony fungal growth ('cottonball') at the tips in spring; infected berries stay firm and ripen into hard, cottony 'mummies' full of white fungal tissue rather than juicy fruit.

• Cranberry fruitwormAcrobasis vaccinii

  Larvae web several berries together with silk and feed inside, hollowing them out; attacked berries colour prematurely, and the frass-filled webbed clusters are the tell-tale sign at harvest.

• anthracnoseColletotrichum gloeosporioides

  Dark brown to black sunken spots on leaves often with concentric rings, spots expand + coalesce into irregular blotches, severely infected leaves drop, branch dieback in heavy attacks, pink-orange spore masses produced on lesions in moist conditions.