06/01/2026
Most of the butterflies you'll see in June have been flying since spring. But a few species emerge for the first time this month — and the ones already here shift into their summer broods.
Already here and peaking: tiger swallowtails on every lilac, black swallowtails laying eggs on parsley and dill, red admirals working the mud puddles, painted ladies on anything blooming.
🌿 Emerging this month:
- Great spangled fritillary — large orange with silver spots underneath. Adults emerge in June after the caterpillar spent winter in leaf litter feeding on violets.
- Hackberry emperor — lands on people, attracted to sweat and salt. Found near hackberry trees.
- Summer azure — the tiny blue butterfly of June. Summer brood is smaller and paler than the spring brood.
- Zebra swallowtail — second brood. Darker and longer-tailed than the spring generation.
- Monarch generation two — caterpillars visible on milkweed this month.
- Viceroy — the monarch mimic. She's not toxic the same way — she tastes terrible on her own.
June has more butterfly species active at once than any other month 🐾