Botanical gardens provide access to vital plants and water for butterflies in the southwest US. This will only become more important as the climate becomes warmer and drier.
Read the blog post at https://botany.one/2022/10/botanical-gardens-act-as-artificial-oases-for-butterflies-in-arid-urban-areas/
Read the original research at https://doi.org/10.3390/insects13100865