Orange-tip Butterfly

Spring herald

The orange-tip is one of the unmistakable signs of spring — males appear in April along hedgerows and country lanes, their vivid orange wingtips flashing as they flutter in a characteristically low, bouncing flight. The flight period is short — usually April to June — and the butterfly is single-brooded, so the window to see it is narrow. By midsummer it is gone entirely, with the next generation spending up to two years as a pupa.

Marbled undersides

The underside of both sexes is marbled in green and white — a pattern that mimics the dappled look of cow parsley flower heads where the butterfly roosts at night. When an orange-tip lands on a cow parsley umbel and closes its wings, it becomes nearly invisible. This camouflage is among the most convincing of any British butterfly.

Larval cannibalism

Orange-tip eggs are laid singly on the flowers of garlic mustard and cuckoo flower. The larvae feed on the developing seed pods. Females lay only one egg per flower head — deliberately avoiding stems that already carry an egg — because the larvae are cannibalistic and will eat any sibling they encounter. This spacing behaviour is instinctive and ensures each larva has sufficient food.

Garlic mustard dependence

In Britain, garlic mustard (jack-by-the-hedge) is by far the most important larval foodplant. The spread of garlic mustard along hedgerows and road verges has helped orange-tip populations remain stable even as many other butterfly species have declined. Verge management that retains tall herb communities is directly beneficial to this species.