Photo: Wendy McCrady https://www.inaturalist.org/people/wendybirds, CC BY 4.0 · source
Pruning guide · Perennial
Golden-beard penstemon (Penstemon barbatus): when and how to prune
Penstemon barbatus
Golden-beard penstemon (Penstemon barbatus) is best pruned in April.
| Pruning months | April |
|---|---|
| Flowering | June–August |
| Good for bees, butterflies and birds | Yes, for bees |
| Native to Belgium | No, planted |
Golden-beard penstemon (Penstemon barbatus): when to prune it?
Prune in April, when you see new growth at the base. Not in autumn: the old stems protect the rosette in winter.
What else to prune in those months? April
Golden-beard penstemon (Penstemon barbatus): how to prune it?
- In summer, cut faded flower stems back to just above the leaf rosette.
- In April, remove the old, dead stems to just above the new leaf rosettes.
- Carefully pull dead or rotting leaves out of the rosette.
How much to cut, and how often?
- One pruning period a year: April.
What does it mean for wildlife?
- Golden-beard penstemon (Penstemon barbatus) flowers in June–August, when it attracts bees.
- If you only cut back in April, the old stems stand through the winter: insects overwinter in them and birds eat the seeds.
Caution: Never cut into the leaf rosette itself: that is where the plant regrows from.
Nearby: related pruning guides
- Hartweg's beardtongue (Penstemon hartwegii)
- Pineleaf penstemon (Penstemon pinifolius)
- Foxglove beardtongue (Penstemon digitalis)
Plant profile: Golden-beard penstemon (Penstemon barbatus) · Pruning calendar and basic rules
This guide is compiled from the Bladwijzer plant profile and pruning calendar.