Ask a Question forum: yellow things on oak leaves

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Hanover Co., Virginia (Zone 7a)
ROCKVILLE
May 9, 2018 9:38 AM CST
What are these?On oakleaves and this other tree that I can't identify.

Thumb of 2018-05-09/ROCKVILLE/3ad001


Thumb of 2018-05-09/ROCKVILLE/4af111

Name: Lin Vosbury
Sebastian, Florida (Zone 10a)

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plantladylin
May 9, 2018 9:45 AM CST
Maybe some type of leaf gall?: https://en.wikipedia.org/wiki/...

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Name: Sue Taylor
Northumberland, UK
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kniphofia
May 9, 2018 9:46 AM CST
Probably oak galls, caused by a tiny wasp. Pretty harmless.

Your second trees looks a bit like Ash.
Name: Kyle
Middle TN (Zone 7a)
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quercusnut
May 9, 2018 1:29 PM CST
I think the 2nd one is hickory.
Name: Greg Chrislip
Memphis, TN (Zone 7b)
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GregC
May 9, 2018 1:50 PM CST
the second one could be hackberry and hackberry nipple gall
Crazy Entomologist working in Public Health.
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Name: Kyle
Middle TN (Zone 7a)
Region: Tennessee Plant and/or Seed Trader Cat Lover Dog Lover Roses Ferns
Hostas Foliage Fan Bromeliad Heucheras Native Plants and Wildflowers Birds
Image
quercusnut
May 9, 2018 4:27 PM CST
The 2nd one is definitely not hackberry.
Name: Greg Chrislip
Memphis, TN (Zone 7b)
Sempervivums Cactus and Succulents Bookworm Cat Lover
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GregC
May 9, 2018 5:44 PM CST
Im going by the oblique leaf margins near the petiole, Im an entomologist not a botanist lol
Crazy Entomologist working in Public Health.
Protect Your Self From Coronavirus
Do: Wash your hands regularly for 20 seconds, with soap and water or alcohol-based hand rub ( must have a 60% alcohol). Cover your nose and mouth with a disposable tissue or flexed elbow when you cough or sneeze. Avoid close contact (2 meter or 6 feet) with people who are unwell
Stay home and self-isolate from others in the household if you feel unwell.

[Last edited by GregC - May 9, 2018 8:41 PM (+)]
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Hanover Co., Virginia (Zone 7a)
ROCKVILLE
May 9, 2018 7:09 PM CST
Thank you everyone. As for the other tree, I'm going with hickory. There are hickory nuts here and there around the place. Just moved in last year and still trying to identify things. Lots of trees.

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