Fred Ann wrote:
Monarch butterflies feed on milkweed and they lay their eggs on the leaves of the plant. When I put a monarch butterfly caterpillar in a plastic cage I always place fresh milkweed leaves in the cage with the caterpillar. The caterpillar eats the leaves. The included picture shows the caterpillar and the milkweed leaves in the cage. The caterpillar is against what once was the Center rib of what was a full sized leaf the day before!
I'll be looking for caterpillars on the leaves.