Avoiding Diapause > Healthy Host Plant

There are some species of butterflies that normally only have one flight per year; unless the region where they fly (usually an arid or desert region) has sufficient or unusual levels of precipitation which triggers healthy new growth of its host plants.

When feeding caterpillars in the lab, you can simulate the responses to spring rains or summer monsoons by providing caterpillars with very succulent and/or healthy host plant.