Invasive Species: Fennel
Foeniculum vulgare
Fennel can become a problem due to its aggressive nature. It isn’t currently on the Oregon Noxious Weed List.
Why is it important to control?
Fennel can drastically alter the composition and structure of many plant communities, including grasslands, riparian, and wetland communities.
How can you identify it?
| Habitat: | Sunny locations with well drained soil. Disturbed areas. Old fields, ditches, roadsides. |
| Life Cycle: | Perennial |
| Height: | Up to 10 ft |
| Leaf Description: | Carrot-like finely-divided, feathery leaves |
| Fruit & Flower Description: | Tiny yellow flowers form umbrella-shaped clusters about 4 in. across |
| Bloom Time: | May to September |
