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Pruning guide · Annual
Edging lobelia (Lobelia erinus): when and how to prune
Lobelia erinus
Edging lobelia (Lobelia erinus) is best pruned in July.
| Pruning months | July |
|---|---|
| Flowering | May–September |
| Native to Belgium | No, planted |
| Poisonous to people and pets | Yes, take care with children and pets |
Edging lobelia (Lobelia erinus): when to prune it?
In July, after the first flush of flowers, when the plant looks bare or untidy.
What else to prune in those months? July
Edging lobelia (Lobelia erinus): how to prune it?
- Cut the whole plant back by a third with scissors.
- Then keep it well watered and give a flowering-plant feed.
- After a few weeks it regrows and flowers again into September.
How much to cut, and how often?
- One pruning period a year: July.
What does it mean for wildlife?
- Don’t cut more than you need to: what stays standing gives insects and birds food and shelter.
Caution: Do not trim during a heatwave or when the plant has dried out: water first and wait for cooler weather. Edging lobelia (Lobelia erinus) is poisonous: wear gloves and keep clippings away from children, pets and livestock.
Nearby: related pruning guides
Plant profile: Edging lobelia (Lobelia erinus) · Pruning calendar and basic rules
This guide is compiled from the Bladwijzer plant profile and pruning calendar.