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Fruit & Orchards

Need help identifying what is wrong with apple trees

10 years ago

Hi. I have five semi dwarf apple trees. I may have let a problem go for too long. It started with my red delicious tree and now has spread to the others. My pear tree is unaffected . The red delicious tree's leaves are mostly brown now., This photo is from the golden delicious.

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Comments (3)

spartanapples
10 years ago
Cedar- apple rust? Just a guess since I have never had it (luckily). Spray with myclobutanil (Rally, Nova, or Immunox fungicide) early in the season. For me that means 2 applications in May and I never have the problem. Do you lots of eastern redcedars growing nearby?
eastmeetwest
10 years ago
It does look like Cedar Apple Rust (CAR). Read up on it. Very common apple disease. Some varieties are more susceptible than the others. http://plantclinic.cornell.edu/factsheets/cedarapplerust.pdf.

In addition to red cedars, junipers are also carriers.
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gardengal48 (PNW Z8/9)
10 years ago
Junipers ARE red cedars!! It is the common name for Juniperus virginiana!! True cedars - Cedrus species - and the western red cedar (Thuja plicata) do not host this fungal issue - only the junipers.

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