Photo: Chrumps, CC BY-SA 3.0 · source
Pruning guide · Perennial
Threadleaf coreopsis (Coreopsis verticillata): when and how to prune
Coreopsis verticillata
Threadleaf coreopsis (Coreopsis verticillata) is best pruned in March and July.
| Pruning months | March and July |
|---|---|
| Flowering | June–September |
| Good for bees, butterflies and birds | Yes, for bees and butterflies |
| Native to Belgium | No, planted |
Threadleaf coreopsis (Coreopsis verticillata): when to prune it?
Trim lightly in July after the first flush of flowers, and cut the old stems down in March.
Threadleaf coreopsis (Coreopsis verticillata): how to prune it?
- In July, cut the whole clump back by about a third, to just below the faded flowers.
- After a few weeks a new flush of flowers follows, lasting into September.
- Leave the stems over winter and cut them down to just above the ground in March.
How much to cut, and how often?
- There are 2 pruning periods a year: March and July. You don’t have to prune in every one.
What does it mean for wildlife?
- Threadleaf coreopsis (Coreopsis verticillata) flowers in June–September, when it attracts bees and butterflies.
- 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: It emerges late in spring: do not dig it up by mistake if you still see nothing in April.
Nearby: related pruning guides
Plant profile: Threadleaf coreopsis (Coreopsis verticillata) · Pruning calendar and basic rules
This guide is compiled from the Bladwijzer plant profile and pruning calendar.