This is my penstemon. I have never cut it - the question is should I chop it? If so, how and when? I guess I expected it to die back and regrow but it never has
I tend to look round the base ~ if there's loads of new growth I often cut it all back hard ~ takes a little longer to flower but can rejuvenate the plant.
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It looks as though it is a bit leggy. I would chop it back to about 18 inches now. Mine has stayed quite green looking this winter as well.
Cool. Thanks hogweed
Just choped mine right back to 2 inches above ground.
I tend to look round the base ~ if there's loads of new growth I often cut it all back hard ~ takes a little longer to flower but can rejuvenate the plant.
Yup, I'm with Lyn and Verdun.
double cool
So chopping is the way forward . . . . . . guess what I'm going to do tomorrow 
Panda, if you can get nice stems with the tips around 4-6" , you could try them as cuttings. Nothing to lose and they might well root in a few weeks.
Good idea Hosta. They'll fit in your cold frame Panda
I cut a few inches from the base above where I can see new shoots. This should be done immediately