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Container Hydrangea Plants

Q.Hydrangea problems

Zone London | Maryk5317 added on April 22, 2017 | Answered

I recently bought these and planted them in containers with John Innes No 3
Some of the leaves are changing colour?
Please help, I’m a complete newbie to the garden

A.Answers to this queston: Add Answer
Liz Baessler
Certified GKH Gardening Expert
Answered on April 25, 2017

There are a few reasons hydrangea leaves turn purple, which are all covered in this article: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-leaves-turn-purple.htm

My best guess is that the plants are suffering from a phosphorous deficiency, which isn't a big deal. You can apply some phosphorous fertilizer and test your soil's pH (low pH is often the cause of phosphorous deficiency). There's more information about how to do this in the article I posted above.

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