Breckland thyme: when and how to prune

Thymus serpyllum

Breckland thyme is best pruned in April and August.

Updated on 10 October 2026

Key facts
Pruning months	April and August
Flowering	June–August
Good for bees, butterflies and birds	Yes, for bees and butterflies
Native to Belgium	Yes

Breckland thyme: when to prune it?

Light pruning in April and a trim after flowering, in August.

What else to prune in those months? April · August

In April, remove dead, brown tips and clear fallen leaves from the mat.
After flowering, in August, lightly trim off the faded flower heads to keep the mat dense.
Never cut into old, bare wood.

There are 2 pruning periods a year: April and August. You don’t have to prune in every one.

Breckland thyme flowers in June–August, 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.
As a native plant, it feeds more insects than a non-native species.

Caution: Do not prune too late in autumn: new shoots may then be killed by frost.

This guide is compiled from the Bladwijzer plant profile and pruning calendar.