From Susan Bergen . . . .
I saw several of these American Copper butterflies in the Irwin Meadow yesterday when I planted Jane’s milkweed. They are common in CT, thought to have been introduced from Europe during Colonial times. The host plant for their caterpillars is curly dock (Rumex crispus) – no shortage of that at Irwin! The butterflies are quite small – with a 1 1/8″ wingspan. They were getting nectar from the white flowers of wild strawberries. These little beauties are active from late April through October in 3 flights (generations), and overwinter in chrysalis form.