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SLELO PRISM

Wild Chervil

 

wild chervil

Wild chervil is a leafy herbaceous biennial, or short-lived perennial plant, in the family Apiaceae; it resembles other plants in the carrot/parsley family. Native to Europe, it was introduced to North America in wildflower seed mixes. Wild Chervil is a prohibited species on the New York State Prohibited and Regulated Invasive Plants list.

Plants in the carrot/parsley family are difficult to distinguish.  The family includes many local native species, edible plants, ornamentals and many weeds, including some that are very poisonous. For positive identification, you should consult a technical flora on the carrot family or contact the noxious weed program. Some of the closest look-alikes are Bur chervil (Anthriscus caucalis), Rough chervil (Chaerophyllum temulum), Poison-hemlock (Conium maculatum), Wild carrot/Queen Anne’s lace (Daucus carota),

Impacts

Wild chervil can spread aggressively and choke out other more desirable plant species; on farms, it can easily choke out desirable forage and hay species, and in natural areas and forest edges, it can out-compete native plant species and reduce wildlife habitat. Like most invasive species, once established, wild chervil is difficult and expensive to eradicate.

Identification

Habitat: it is generally found in damp areas along roadways and in fields and pastures; it can tolerate a wide range of conditions.

chervil map 1

Leaves: are shiny and dark green, finely divided (fern-like) with sharply pointed segments, and are somewhat hairy. Leaves get smaller in size as the closer they are to stem tips.

chervil leaves

Stems: grow up to 3 feet tall and are hallow and furrowed, entirely green, hairy on the lower portion and smooth on the upper portions; stem nodes have fringe hairs.

chervil stem

Flowers: are small and white and grow in 3’’ wide umbels (flower heads originate from one point) flowers bloom from April to May.

chervil flower

Seeds: are about .2’’ in length and are shiny and black, and have an elongated oval shape; they join in pairs with small antenna-like structures on top.

Roots: are thick and tuberous and can extend over 6 feet into the soil.

chervil roots

Control & Management

Since wild chervil relies on seeds to reproduce, the control strategy should focus on stopping the plant from flowering and setting seed.

Physical control methods such as mowing, tilling and reseeding the area with competitive native vegetation will help control wild chervil. Plants can also be dug up but it is important to remove entire rootstalk; removal of roots is difficult due to wild chervil’s deep root systems. These methods should be repeated weekly to fully eradicate the species.

Chemical control with broadleaf selective herbicides is generally more effective than non-selective products like glyphosate (Roundup)and Arsenal because they allow the grass to suppress any surviving plants and prevent germination of chervil seeds.

*Plant may cause skin irritation so use caution and wear gloves when handling.

Photo Credits:  

Photo Credits: Flower, leaf, stem, and roots: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org, Range map:http://plants.usda.gov/maps/large/AN/ANSY.png.

Resources:

 “Invasive Plant Atlas of New England.” Invasive Plant Atlas of New England. N.p., n.d. Web. 16 July 2015. <http://www.eddmaps.org/ipane/ipanespecies/herbs/Anthriscus_sylvestris.htm>.

 “Lignan Profiles of Indoor-Cultivated Anthriscus Sylvestris.” Planta Med Planta Medica 69.10 (2003): 959-61. USDA Forest Service, Forest Health Staff. Web. 16 July 2015.

 Jefferson County Noxious Weed Control Board. “JEFFERSON COUNTY NOXIOUS WEED CONTROL BOARD F A C T S H E E T 201 West Patison Street, Port Hadlock, WA 98339 360 379-5610 Ext. 205 Noxiousweeds@co.jefferson.wa.us Http://www.co.jefferson.wa.us/WeedBoard WILD CHERVIL (Anthriscus Sylvestris).” WILD CHERVIL (n.d.): n.

“Noxious Weeds.” Wild Chervil Identification and Information. King County, 3 Dec. 2013. Web. 15 July 2015. <http://www.kingcounty.gov/environment/animalsAndPlants/noxious-weeds/weed-identification/wild-chervil.aspx>.pag.Noxiousweeds@co.jefferson.wa.us. Web. 15 July 2015. <http://www.co.jefferson.wa.us/WeedBoard/pdfs/FactSheets/WildChervil.pdf>.

 “Wild Chervil.” Wild Chervil. Stevens County Noxious Weed Control Board, n.d. Web. 16 July 2015. <http://www.co.stevens.wa.us/weedboard/htm_weed/wx.htm>.

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PREVENTION
Prevent the introduction of invasive species into the SLELO PRISM.

EARLY DETECTION & RAPID RESPONSE
Rapidly detect new and recent invaders and eliminate all individuals within a specific area.

COOPERATION
Share resources, including funding personnel, equipment, information, and expertise.

INFORMATION MANAGEMENT
Collect, utilize, and share information regarding surveys, infestations, control methods, monitoring, and research.

CONTROL
Control invasive species infestations by using best management practices, methods and techniques to include: ERADICATION (which is to eliminate all individuals and the seed bank from an area), CONTAINMENT (which is reducing the spread of established infestations from entering an uninfested area) and SUPPRESSION which is to reduce the density but not necessarily the total infested area.

RESTORATION
Develop and implement effective restoration methods for areas that have been degraded by invasive species and where suppression or control has taken place.

EDUCATION & OUTREACH
Increase public awareness and understanding of invasive species.

INNOVATION
Develop and implement innovative technologies that help us to better understand, visualize, alleviate or manage invasive species and their impacts or that serve to strengthen ecosystem function and/or processes.

Rob Williams
PRISM Coordinator

Megan Pistolese
Outreach and Education

Brittney Rogers
Aquatic Invasive Species

Robert Smith
Terrestrial Invasive Species

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