Photo: Averater, CC BY 3.0 · source
Pruning guide · Bulb or tuber
Allium nigrum: when and how to prune
Allium nigrum is best pruned in July.
| Pruning months | July |
|---|---|
| Flowering | May–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 |
Allium nigrum: when to prune it?
No pruning is needed. Let the leaves die back and cut off the faded stems in July, or leave the seed heads standing for decoration.
What else to prune in those months? July
Allium nigrum: how to prune it?
- Cut the stem with its seed head off just above the ground once it no longer looks good.
- Leave the leaves until they are yellow and dry.
- Pull away the withered leaves when they come away easily.
How much to cut, and how often?
- One pruning period a year: July.
What does it mean for wildlife?
- Allium nigrum flowers in May–June, when it attracts bees.
Caution: Do not cut the leaves off while they are green, even though they start to yellow during flowering: the bulb needs them to flower next year. Allium nigrum is poisonous: wear gloves and keep clippings away from children, pets and livestock.
Nearby: related pruning guides
Plant profile: Allium nigrum · Pruning calendar and basic rules
This guide is compiled from the Bladwijzer plant profile and pruning calendar.