The non-toxic penstemon is considered to be partially hardy, although some varieties tolerate frost quite well, while others are very sensitive to it. However, these varied plantain plants are definitely an ornament for the perennial or rock garden.
How can penstemon successfully overwinter?
In order to overwinter penstemon, robust varieties should be protected in the bed with brushwood or leaves. Sensitive varieties require frost-free overwintering in pots, e.g. in winter gardens or greenhouses. For care, water little and do not fertilize.
Only overwinter the more robust varieties in the bed, otherwise frost-free overwintering in the winter garden or greenhouse is recommended. Bedding plants should be protected from frost with a layer of brushwood or leaves.
You plant sensitive varieties of penstemon in a pot in autumn. Take this opportunity to cut back the wilted leaves as this makes he alth checks easier. Water the penstemon just a little and avoid fertilizing.
The most important things in brief:
- Winter hardiness varies depending on variety
- robust varieties may overwinter in the bed
- overwinter sensitive varieties frost-free
- do not fertilize
- water little
Tip
Cut back potted plants in the fall to make them easier to control for pests or diseases.
