Red spots on apple tree leaves

No. San Diego Co., CA(Zone 10b)

We have a couple of apple trees that have these red spots on them. Do they look like normal weathering or is this something to worry about? These are new trees, planted bareroot this spring.

Thumbnail by KaperC
Augusta, GA(Zone 8a)

It would appear to be some type of fungus, possibly the start of cedar rust;
http://www.oznet.ksu.edu/dp_hfrr/extensn/problems/rusttree.htm

No. San Diego Co., CA(Zone 10b)

Thanks Farmerdill. I looked at several web sites for information about cedar rust, and the description does not seem to fit -- at least yet! I will keep looking and watch the trees to see if things change.

No. San Diego Co., CA(Zone 10b)

I contacted the grower about this and he supplied this link

http://www.caf.wvu.edu/kearneysville/disease_descriptions/omaltblo.html.

This looks closer to what our trees have and the site has some good links.

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