bleeding hydrangea

Saint Louis, MO(Zone 6a)

One of the things I like best about some hydrangeas is the evolving color of the blooms as they age.
This one develops a reddish margin around each petal as it ages.
But I've never noticed this phenomenon before:
it looks like the reddish discoloration is a response to minor injury to the petal.
In this case, the injury is a nibble from an insect.
I thought it was interesting.

Thumbnail by Weerobin
Saint Louis, MO(Zone 6a)

Here's a closer view.

Thumbnail by Weerobin
(Arlene) Southold, NY(Zone 7a)

Interesting. I'll have to go see if I have any bleeding on mine.

How did you find out that it's caused by an insect? Just curious.

Saint Louis, MO(Zone 6a)

I don't know for sure - just guessing, based on the little hole in the petal.

central, NJ(Zone 6b)

That IS interesting

Hannibal, NY(Zone 6a)

I would say your guess is absolutely right, Weerobin. I think the injury to the petal just hurried the coloration along.

Paniculata hydrangeas have a tendency to do that also.

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