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What's wrong with my Walnut tree? The leaves are turning black. They look as if they have been burnt but no fire was near this tree.
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It doesn't look like that.
Could it be frost damage? We have very cold nights and bloody hot days at the minute.
A swift google images look suggests it's likely (IANATP)
Do brown patches or spots develop first or does the whole leaf turn black in one go? I am not an expert but if no patches/spots then it could be frost (particularly as the leaves are young/emergent). Lots of potential pests and diseases though 🙁
No patches or spots. The leaves seem to wilt then go black.
We're getting a lot of winter damage this year, I think the combination of mild spells and hard colds is messing up the trees' cycles a bit, I've seen a lot of early flowering and budding and the like then total carnage in the next cold snap. It ain't easy being green.
+1 weather, if you've had any late/cold blasts.
There was ice on the car windscreen this morning and now its 22 degrees. That's probably it.
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Hmm. I wood!
Tree aids. The bad kind.