Photo: Ragesoss, CC BY-SA 3.0 · source
Pruning guide · Perennial
Canadian columbine: when and how to prune
Aquilegia canadensis
Canadian columbine is best pruned in March and June–July.
| Pruning months | March and June–July |
|---|---|
| Flowering | April–June |
| 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 |
Canadian columbine: when to prune it?
No real pruning is needed. After flowering, in June–July, remove spent stems and tatty leaves; in March, clear away dead leaves.
Canadian columbine: how to prune it?
- Cut spent flower stems back to the leaves at the base, unless you want to collect seed.
- Leave one or two stems until the pods turn brown and split open if you want seedlings.
- If the leaves are damaged by leaf miners or powdery mildew, cut them right back; they quickly regrow.
- In March, carefully remove old dead leaves without damaging the crown.
How much to cut, and how often?
- There are 2 pruning periods a year: March and June–July. You don’t have to prune in every one.
What does it mean for wildlife?
- Canadian columbine flowers in April–June, when it attracts bees.
- If pruning falls during flowering, wait until it is over or leave part of the plant to flower, so bees and butterflies still benefit.
Caution: If you let seed ripen while other columbines flower nearby, the seedlings will often be hybrids with a different colour and shape. Canadian columbine is poisonous: wear gloves and keep clippings away from children, pets and livestock.
Nearby: related pruning guides
Plant profile: Canadian columbine · Pruning calendar and basic rules
This guide is compiled from the Bladwijzer plant profile and pruning calendar.