Southeastern Wisconsin Invasive Species Consortium, Inc.

SEWISC

Japanese Hedge Parsley

Japanese Hedge Parsley

Japanese Hedge Parsley
(Torilis japonica)

DESCRIPTION

Herbaceous biennial in the carrot family, with white umbel flowers and pasley-like leaves. Flowering plants are branched and grow 2-6 feet tall.

Leaves: First-year plants have low-growing, parsley-like rosettes that stay green until late fall. Second-year plant leaves are alternate, compound, fern-like, 2-5 inches long and slightly hairy.

Flowers: Flowers are tiny and white, growing in small, open, flat-topped umbels. Has 2 or more bracts at the base of each umbel. Blooms in July and August.

Fruits & seeds: The small fruit, ripens quickly, and is covered in hooked hairs that attach to clothing and fur.

Roots: Taproot.

 LOOK-ALIKES

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).

HABITS & HABITAT

In Wisconsin, Japanese hedge-parsley has been found in numerous counties. Habitat includes disturbed upland sites such as roadsides, urban areas, railroad rights-of-way and woodlands.

CONTROL

Mechanical: Pull or mow prior to flowering.

Chemical: Treat foliage with glyphosate, triclopyr, or metsulfron methyl in early spring or on plants that are resprouting after having been cut. 

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