Japanese Hedge Parsley (Torilis japonica)

Hedge parsleys are parsley-like annuals with taproots and erect, ridged stems. They grow in a spreading form up to 3 feet in height. Leaves are alternate, pinnately divided, 2 to 5 inches long and may be slightly downy. Small, white flowers are clustered in small, open, flat-topped umbels. Japanese hedge-parsley has 2 or more pointed bracts at the base of each umbel, whereas spreading hedge-parsley lacks such bracts. The small fruiting structure is covered in velcro-like hairs which attach to clothing and fur, readily dispersing the seed.

See also Spreading hedge parsley. There are many white-flowered, umbel-producing plants with pinnately compound leaves, several of which are also weedy exotics. Queen Anne's lace or wild carrot (Daucus carota) - a widespread weed in Wisconsin -- has similar finely-divided leaves, but leaves and stems are quite hairy. It also has larger flat-topped flower umbels, with densely packed white flowers. When crushed, it smells like carrots. Other weedy exotic look-alikes for Japanese hedge parsley include wild chervil (Anthriscus sylvestris), caraway (Carum carvi), poison hemlock (Conium maculatum), Chinese hemlock parsley (Conioselinum chinense), and sweet cicely (Osmorhiza).

In Wisconsin, Japanese hedge-parsley has been found in Dane, Manitowoc, Rock and Walworth counties. Spreading hedge-parsley is not currently known in Wisconsin, but nationally is more common than T. japonica. Habitat includes disturbed upland sites such as roadsides, urban areas, railroad rights-of-way and woodlands.

Pull or mow prior to flowering. Treating foliage with glyphosate or triclopyr is effective if done early in the spring or on resprouts after cutting. Monitor site for additional seedlings.

Flat topped umbel; Photo by Dan Tenaglia	Small, white flowers; photo by Dan Tenaglia
Pinnately compound leaf; Photo by WDNR	Photo by WDNR

Parsley Look-Alikes
(Click on image to enlarge)

Caraway (Carum carvi); Photo by Emmet J. Judziewicz, WI State Herbarium	Wild chervil (Anthriscus sylvestris); Photo by Leslie Mehrhoff, IPANE
Poison hemlock (Conium maculatum); Photo by William S. Justice, USDA-NRCS PLANTS Database	Chinese hemlock parsley (Conioselinum chinense); Photo by WDNR
Sweet cicely; photo by David Eagan, WDNR	Sweet cicely; photo by David Eagan, WDNR
Queen Anne's Lace (Daucus carota); photo by John M. Schoenecker, WI State Herbarium	Umbel of Queen Anne's lace; photo by David Eagan, WDNR
Umbel of Queen Anne's lace; photo by David Eagan, WDNR

• WI State Herbarium
• USDA Plants Database

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