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I have a couple of very large Penstemons in my garden, which were lovely for a couple of years, but got too large so I cut them back. They are still growing well but I had virtually no flowers last summer. Was this because I cut them back at the wrong time, in the wrong way or was it to do with the awful weather last year. I need to cut them back again but would like to get it right this time. Can anyone help?
I cut mine back in March, and I too had less flowers last year. I am putting it down to the lousy summer, and I have already done mine this year.
I'd blame the weather. It was responsible for a lot of grief last year. After winter is a good cutting back time
Gosh thanks so much for the advice and so quick!! Glad other people had the same experience as me, makes me feel like I did less of a hatchet job on them. I will be out wielding the secateurs this weekend, snow and wind permitting.... #
Thanks again everyone
Thanks Verdun, i will try the cuttings and see what happens. Not always that good with cuttings, but will certainly have a go.
Give yourself 2 chances- use the prunings from their cut back this spring for 1 lot of cutting material, then take fresh cuttings again in late summer.
Those taken in the late summer will need overwintering, but a coldframe/unheated porch/greenhouse will be fine. Pop a fleece 'blanket' over them if really cold winter. J.
Hi Everyone, Cut these down to the ground in April, and took lots of cuttings. All the cuttings died, but the plants are now looking wonderful and have come back stronger and better than before.
Will try cuttings again next year, but thanks foir all the advi ce.