Quick answer: 5 native Washington plants have a recorded bloom range that includes February.
5 species
- California bay laurel Umbellularia californica · 3 states
- California poppy Eschscholzia californica · 6 states
- Checker lily Fritillaria affinis · 3 states
- Henderson's shooting star Dodecatheon hendersonii · 3 states
- Pacific trillium Trillium ovatum · 3 states