2. **Willow (Salix spp.)** - Willows are an excellent host …
2. **Willow (Salix spp.)** - Willows are an excellent host for many butterfly species. The leaves are food for caterpillars, notably those of mourning cloaks and viceroys.
2. **Willow (Salix spp.)** - Willows are an excellent host for many butterfly species. The leaves are food for caterpillars, notably those of mourning cloaks and viceroys.