Woodland Trust

Nature's CalendarNature Detectives

Keep a look out for the ripening fruit of the Horse Chestnut, the conker.

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