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Pruning Penstemons
December 18, 2008 by Linda
Filed under Q&A
Question:
Do I cut back PENSTEMONS before winter or leave them alone?
Answer:
It is best to leave Penstemons over the winter the old stems help to shelter the new shoots from frost.
In late April or early May you need to have a look at each plant. If the plant has new shoots growing from the bottom of the plant you can cut down all the old stems to ground level. If there are no new shoots forming, then just shorten each stem by cutting just above the lowest set of leaves.
After pruning apply a general fertiliser to encourage strong growth.
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