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| It's been a hot July with little rain, so I'm guessing that has something to do with it, but I've been pretty good about supplemental watering after a wet spring. I planted the tree last fall. No spotting on the top leaves, and they're the only ones flowering. Brown, dried fruits still holding since last fall. Bottom - no flowering and as you can see, the rust spots are prominent. Any cause for concern?
A little too close to the house? Maybe, but I was inspired by the pics on the hort.uconn.edu listing. |
Follow-Up Postings:
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- Posted by gardengal48 PNW zone 8 (My Page) on Fri, Jul 20, 12 at 15:05
| Unlikely to be a rust......but sourwoods are prone to several types of leaf spot. Early season humidity and lack of air circulation encourage them. Can cause some early leaf drop if severe but otherwise more cosmetic than a real concern. And not much you can do about it at this time of the season anyway. |
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| Lack of circulation sounds about right. The bee balm I have a few feet away from the tree have had mildew while the section in the front of the yard doesn't. |
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- Posted by ken_adrian z5 (My Page) on Fri, Jul 20, 12 at 17:02
| i dont care what it is.. though a proper ID would be nice.. to know .. its cosmetic in my book .. and it goes away.. when the leaves naturally fall off.. [in the alternative.. in my world.. it isnt worth the use of chemicals.. to fight a leaf problem.. on a deciduous plant .. mostly because most chem use would be prevention.. and you will never cure those leaves ...] removing all leaf litter in fall MIGHT help reduce occurrence ... i have seen worse siting.. it looks fine from this angle.. but wont it totally block the view out the window in a few years ???? .. though it might be the camera angle ... since it was just planted last fall.. moving it this fall shouldnt be all that problematic ... just dig an extra 6 inches to foot around what you planted last year ... just dont make the root mass so big you cant get it out of the hole.. been there.. done that.. lol ... ken |
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| The link below lists symptoms that appear to match the photos. No chemicals whatsoever, Ken. I'll dispose of the leaves. And I'm not sure I have another dig up and transplant in me after doing at least 4 of the same size or bigger in the past year or so. Plus, the only spot I have left for it would be next to the sidewalk in front of the white oak but then I'd be worried about the salt trucks. And there's a swale right in front of it in its current location so can't even move it up a little.
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Here is a link that might be useful: Diseases and pests of ornamental plants - Google Books Result
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