01/07/2026
The conservation and restoration of our beautiful natural world can take many forms. Sometimes, opportunities to help nature present themselves in unexpected ways, and this is one of them.
On Monday, our nursery manager found several Monarch caterpillars in a naturally occurring bundle of milkweed in our lower shade house. Further searching located caterpillars in different locations around the shade house, as well as a few found at the seed orchard belonging to the Desert Seed Resource Center.
It is very late in the year to have active caterpillars, but our unseasonably warm weather throughout December likely attracted female Monarchs to our butterfly waystation. The resulting hatchlings are now at risk due to the abrupt change in weather, making immediate action necessary.
Over the last two days, we've collected 42 (yes, you read that right, 42!) caterpillars in varying stages of growth, or instars. Some of them are so small as to be newly hatched, and some are near pupation. We reached out to Butterfly Wonderland and they gave us some great information regarding how best to help these caterpillars. To that end, they've been placed in a mesh butterfly enclosure inside the greenhouse to keep them warm, provided with milkweed to eat, and will be monitored daily.
Once they emerge from their chrysalis, they can be released as long as the temperature is above 55*. Thankfully, most days in Arizona are suitable for releasing butterflies even throughout the winter. Monarchs are an endangered species according to the IUCN, and we felt it was important to do what we could to save what we could. Your continued support of Gila Watershed Partnership is what makes this possible and we appreciate your unceasing commitment. Follow our ongoing Monarch journey to stay connected and inspired!