Quick answer: 2 monarch host plants are native to Delaware, 2 with a live listing as of 16 Sep 2026.
2 species
- Butterflyweed Asclepias tuberosa · 37 states
- Swamp milkweed Asclepias incarnata · 25 states
Quick answer: 2 monarch host plants are native to Delaware, 2 with a live listing as of 16 Sep 2026.