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Penstemon deadheading?
in Plants
Hello
My Dad kindly bought me some penstemon, I am wondering about deadheading them. I have been pulling the flowers off but they still seem to be going to seed and I wonder if instead I should be cutting the whole spike off? The only info I can find online is to do with pruning, not dead heading so any advice appreciated.
My Dad kindly bought me some penstemon, I am wondering about deadheading them. I have been pulling the flowers off but they still seem to be going to seed and I wonder if instead I should be cutting the whole spike off? The only info I can find online is to do with pruning, not dead heading so any advice appreciated.
Thanks

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It also means that plants can put energy into potentially producing more flower spikes
I live in west central Scotland - not where that photo is...