Credit: Papillo / Alamy Stock Photo
How do purple hairstreak butterflies breed?
Towards the end of summer, eggs which look like miniature sea urchins are laid at the base of plump oak buds. While the caterpillars develop within the egg quickly, they remain dormant over the winter. They hatch the following spring when the buds break, with the caterpillars burrowing into the flower buds to feed. They reach adulthood by July.