Appearance
Foeniculum vulgare is a perennial with soft, feathery, almost hair-like foliage growing up to 6.6 ft. (2 m) tall. This plant can look similar to dill.

Foliage
Stem striate. Leaves 3-4 pinnate; segments filiform, up to 1.6 in. (4 cm) long; leaf bases sheathing. Rays 5-30, 0.39-2.4 in. (1-6 cm) long.

Flowers
Flowers are small, yellow, and found in large flat-topped umbels. Blooming occurs between August and October.

Fruit
Fruit oblong to ovoid, 0.12-0.2 in. (3-5 mm) long. Seeds ripen from September to October. This plant can reproduce from the crown or root fragments but freely reproduces from the seed.

Ecological Threat
Foeniculum vulgare requires well-drained soil and cannot grow in the shade. It prefers disturbed areas and is native to Europe.

Citations
Winston, R.L., Andreas, J.E., Milan, J., DesCamp, W., Randell, C.B., and M. Schwarzlander. 2014. New Invaders of the Southwest. United States Department of Agriculture, Forest Health Technology Enterprise Team. FHTET-2014-12. Retrieved from https://bugwoodcloud.org/resource/files/14767.pdf
 

Resources

• Element Stewardship Abstract - The Nature Conservancy

Selected Images

Maps

Invasive Listing Sources

• California Invasive Plant Council
• Invasive Plant Species of West Virginia
• Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
• John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
• National Park Service, Mid-Atlantic Exotic Plant Management Team Invasive Plant List
• Native Plant Society of Oregon, 2008
• New Invaders of the Southwest
• Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
• Pacific Northwest Exotic Pest Plant Council, 1998
• Washington Noxious Weeds
• WeedUS - Database of Plants Invading Natural Areas in the United States
• West Virginia Native Plant Society, Flora West Virginia Project, and West Virginia Curatorial Database System, September 3, 1999

References