Photo: Epibase, CC BY 2.5 · source
Pruning guide · Perennial
Siebold’s plantain lily (Hosta sieboldiana): when and how to prune
Hosta sieboldiana
Siebold’s plantain lily (Hosta sieboldiana) is best pruned in August and November.
| Pruning months | August and November |
|---|---|
| Flowering | June–July |
| Good for bees, butterflies and birds | Yes, for bees |
| Native to Belgium | No, planted |
| Poisonous to people and pets | Yes, take care with children and pets |
Siebold’s plantain lily (Hosta sieboldiana): when to prune it?
After flowering, in August, cut off the flower stems. Remove the leaves when they turn yellow and limp after the first frost, usually in November.
Siebold’s plantain lily (Hosta sieboldiana): how to prune it?
- Cut spent flower stems off at the base, unless you want seed.
- In summer, cut damaged leaves off at the base.
- After the first frost, clear the yellow, limp leaves: slugs then find fewer hiding places.
- Leave the crown itself alone: that is where next year’s buds are.
How much to cut, and how often?
- There are 2 pruning periods a year: August and November. You don’t have to prune in every one.
What does it mean for wildlife?
- Siebold’s plantain lily (Hosta sieboldiana) flowers in June–July, when it attracts bees.
Caution: Siebold’s plantain lily (Hosta sieboldiana) is poisonous: wear gloves and keep clippings away from children, pets and livestock.
Nearby: related pruning guides
- Blue plantain lily (Hosta ventricosa)
- Fragrant plantain lily (Hosta plantaginea)
- Narrow-leaved plantain lily (Hosta lancifolia)
Plant profile: Siebold’s plantain lily (Hosta sieboldiana) · Pruning calendar and basic rules
This guide is compiled from the Bladwijzer plant profile and pruning calendar.