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Post by dmay » Mon Nov 12, 2012 10:48 am

Mark has suggest cutting them to the ground; can an Endless Summer hydrangeas be treated this way and when is the best time of year to do this? They get quite large after a while and also look messy over the winter.

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Re: Hydrangeas

Post by lorijones » Mon Nov 12, 2012 2:13 pm

Endless Summer hydrangeas are best pruned in the spring once the new leaves have popped. This way you will be able to identify any dead wood and remove it. Endless Summer blooms on both new wood and old wood so even if you happen to prune it at the "wrong" time you will still get blooms. Deadheading the spent blooms throughout the summer will encourage more blooming (cut the old flower just above the first set of leaves growing directly below it). You can remove the old flowers now to make the plant look neater over the winter.
If you need to reduce its size, the best time to do this would be spring. You would be cutting off any spring blooms but it will bloom in the summer on the new wood that is produced. I wouldn't cut it all the way to the ground. I would just prune it to give it a nice shape. If it seems very dense, you can thin it by cutting out 20% of the oldest stems right to the ground.

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