Quick answer: 4 native Delaware plants have a recorded bloom range that includes November.
4 species
- Blue mistflower Conoclinium coelestinum · 26 states
- Maypop passionflower Passiflora incarnata · 13 states
- Swamp sunflower Helianthus angustifolius · 15 states
- Witch-hazel Hamamelis virginiana · 28 states