Photo: Louise Docker from sydney, Australia, CC BY 2.0 · source
Pruning guide · Perennial
Bog sage: when and how to prune
Salvia uliginosa
Bog sage is best pruned in April–May.
| Pruning months | April–May |
|---|---|
| Flowering | August–October |
| Good for bees, butterflies and birds | Yes, for bees and butterflies |
| Native to Belgium | No, planted |
Bog sage: when to prune it?
In April–May, when you see new shoots at the base; the old stems protect the plant in winter.
Bog sage: how to prune it?
- Wait until you see new shoots coming out of the ground, as they appear late.
- Then cut the old stems down to just above the ground.
- In May–June, pinch out the tips of the new shoots for a more compact plant.
How much to cut, and how often?
- One pruning period a year: April–May.
What does it mean for wildlife?
- Bog sage flowers in August–October, when it attracts bees and butterflies.
Caution: It makes underground runners and can advance a lot in moist soil; slice off runners that stray too far. It is not quite hardy, so protect the roots in winter.
Nearby: related pruning guides
This guide is compiled from the Bladwijzer plant profile and pruning calendar.