Quick answer: 4 monarch host plants are native to Arizona, 3 with a live listing as of 24 Oct 2026.
4 species
- Antelope-horns milkweed Asclepias asperula · 2 states
- Butterflyweed Asclepias tuberosa · 40 states
- Rush milkweed Asclepias subulata · 3 states
- Showy milkweed Asclepias speciosa · 17 states