Thinning a blueberry bush is a necessary step for increasing the longevity of the plant. Find out more about thinning your blueberry bush from a professional organic gardener, Jeff Belli, in this free video.
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Cross-section of blueberry stem
showing brown discoloration
caused by the fungus
Image courtesy of NCSU CES.
The control of stem blight depends on cultural practices; fungicides do not provide adequate protection.
Having a clean planting stock is the …
Early symptoms of stem blight on blueberries are yellowing, reddening
or drying of leaves on one or more
branches. Photo courtesy of NCSU
Cooperative Extension Service.
Blueberry stem blight caused by the fungus Botryosphaeria dothidea and other Botryosphaeria species is …
Rabbiteye cultivars suffer from pre-
mature defoliation that appears
to be caused by a rust fungus,
tentatively identified as
Pucciniastrum vaccinii (Synonym P.
myrtillus). Photo courtesy of
NCSU Cooperative Extension Service.
Leaf rust, caused by the rust fungus, Pucciniastrum vaccinii …
Alternaria Leaf Spot (Alternaria tenuissima) occurs primarily in the spring during prolonged periods of cool wet weather, when spores are produced in abundance. In most cases only lower leaves are affected; however, instances do occur when severe infection completely defoliates …
Gloeosporium Leaf Spot or Anthracnose
can produce flecking, leaf anthracnose
and stem lesions. Photo courtesy of
NCSU Cooperative Extension Service
Gloeosporium leaf spot can cause severe defoliation and reduction in yield of blueberry crops.
Dothichiza caroliniana and Gloeocercospora inconspicua
In late summer, the double spot fungus develops a secondary necrotic area around the original lesion spreading in an irregular to fan-shaped pattern. The gloeocercospora leaf spot appears on the foliage by mid-summer as large …