Short answer
The RHS recommends trimming hawthorn twice a year, in summer and autumn. Hawthorn is a classic boundary and wildlife hedge, so nest checks matter more than on most hedges.
Hawthorn is thorny and vigorous. It grows well in a mixed native hedge, and can be cut formally or left looser to flower and fruit.
How to cut
- Check for nests; hawthorn is a favourite nesting site.
- Trim the top and sides, slightly wider at the base.
- Cut back in stages if overgrown; hawthorn regrows well from hard pruning in late winter.
- Wear thick gloves and eye protection; thorns can cut through light clothing.
Wildlife tips
If you want flowers and berries, trim less often or trim in alternate years. Leave some stretches uncut to give birds shelter, and avoid work from March to August where possible.
Check for nests before you start; see our nesting season guide.