Extension > Garden > Diagnose a problem > What's wrong with my plant? > Fruit > Blueberry > Spots or blotches on stems or branches
Blueberry > Stems/branches > Spots or blotches on stems or branches
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Canker diseases
Fusicoccum putrefaciens and Phomopsis vaccinii
- Reddish brown, target like cankers can be found on infected branches
- Cankers are often low on the branch and near a leaf scar
- Cankers enlarge each year until they girdle and kill the stem
- In summer, leaves on infected branches, wilt and turn reddish brown
- Small black bumps can be found around cankers and on dead branches
- More information on Canker diseases
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Anthracnose
- Salmon to orange colored sticky spore masses develop on infected berries and stems when wet
- Infected twigs/canes have dark brown lesions with raised bumps arranged in concentric circles
- Reddish-brown round to irregular spots on leaves
- Berries become soft and wrinkled from the blossom end
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Botrytis Blight/Gray Mold
Botrytis cinerea
- Twigs turn brownish-black and become gray
- Infected blossoms turn brown and become covered with a fuzzy gray mold
- Berries are covered with a fuzzy gray mold
- Leaves have brown, irregular lesions and may become distorted
- More information on Botrytis Blight/Gray Mold
