Hypericum Magical Red Star Pruning?
Although I've had this growing for a few years I've not been able to find out when I should cut this back. I usually take about a third off the top each spring, but the clump is getting taller and taller. So I'm wondering if I'm not cutting enough off. Anyone out there got one as well. I love it for the red berries, that turn black and look fabulous with a frost on them. So it has a good interest all year.