Quote:
Originally Posted by imdavies
The first has large pink fluffy flowers and I am fairly sure they are some sort of spirea but don't know which sub species and hence don't know when best to prune.
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Spiraeas handle a lot of abuse. It depends what you are trying to prune to achieve. I prune one of mine hard and several times a year because I'm trying to stop it taking over the world. But for better behaved ones, a good haircut in the winter is what most of them benefit from. You can also cut the flowerheads off as soon as they look tatty to improve the appearance in the growing season.