Woodland Trust

Nature's CalendarNature Detectives

Look out for dog rose flowers this month.

Brimstone. Libby Owensbrimstone

Gonepteryx rhamni

  • Female has pale green wings
  • Male has lemon-yellow wings - the origin of the word ‘butter’fly
  • Both have a small orange spot on each wing 
Why not download our brimstone fact sheet?

brimstonebrimstone fact sheet

Where found

Light woodland, bushy areas

Larvae feed on buckthorn

Found throughout the British Isles, except Scotland

When to look for

  • Often first butterfly to appear after winter
  • Hibernating specimens reappear in early spring, from late March/early April - view live map