I have two hydrangea bushes with white, almost looks like bird poop, on the underside of the leaves and some on the stems.
I wasn't sure if it was a fungus and what to do about it.
I don't want my bushes to be damaged.
What is the white stuff on my hydrangea?
Could be spittlebugs - they leave a white foamy stuff, but don't do harm. Or butterfly/moth larvae. Keep an eye on it and if it doesn't seem to be hurting the plant (lots of leaves curling up, stems dying) I'd leave it alone.
Reply:Here is a list of Hydrangea diseases
http://en.wikipedia.org/wiki/List_of_hyd...
If you dont see it on this list your probably safe.
Reply:There is a certain butterfly that has larva shaped like and looking like bird poop--so the birds won't eat them. Maybe that's it. Check and see if it's actually a living creature. What tipped me off is that it is on the stems as well as the leaves.
Reply:You must have very perverse neighbours then.
Reply:It sounds like powdery mildew. Only water in the morning so the leaves have time to dry out before dark - when mildew can form.
Reply:What is the white stuff on my hydrangea? ="HYDRANGRA WHITE STUFF"
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Hi I have the same, did they improve?
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