Hydrangea Flowers and Leaves Falling Off

I have two hydrangea plants. One I believe is called a Lucy or Lacy and that is the one that is infected. The other one, we don't know what the name is, but it has a light blue flower turning to like a pink. So far that plant doesn't seem to be affected.

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The blossoms on the infected plant have turned black and fallen off and now the leaves are doing the same thing. It looks like it is really dried out and feels the same. The leaves are black and shriveled. Can this plant come back or should I remove it?

By Frank

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August 1, 20120 found this helpful

Sounds like you have an infestation of white flies and the black is called sooty mold caused by the tiny white flies on the back. I use bleach and Murphy's oil soap and spray them 2 times a week till gone. Even in South GA heat that seems to be the best for the pest plaguing the shrubs in the humid heat. powdery mildew will also cause similar and that should take care of it too.

You could cut it back to just above the ground, if you don't want to wait for the big part to recuperate and spray but if you do burn or haul off the limbs immediately so you don't re-infest.

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