General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Partial or Dappled Shade
Partial Shade to Full Shade
Full Shade
Water Preferences: Mesic
Soil pH Preferences: Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 8b
Plant Height: 10 to 18 inches
Fruit: Other: Green when ripe.
Flowers: Other: Lower (female) zone of spadix fused to spathe
Flower Color: Green
Flower Time: Spring
Inflorescence Height: to 18 inches
Foliage Mound Height: 6 to 12 inches
Underground structures: Rhizome
Corm
Uses: Medicinal Herb
Will Naturalize
Resistances: Rabbit Resistant
Toxicity: Other: All parts of plant contain calcium oxalate crystals, an irritant to the mouth and esophagus. Toxic to cats and dogs.
Propagation: Other methods: Offsets
Other: Bulbils present at base of petiole and base of leaf blade
Miscellaneous: Goes Dormant

Image
Common names
  • Crow-Dipper
  • Ban Xia
  • Pinellia
Botanical names
  • Accepted: Pinellia ternata
  • Synonym: Pinellia angustata
  • Synonym: Arum ternatum
  • Synonym: Arisaema ternatum
  • Synonym: Pinellia cochinchinensis

Photo Gallery
Location: Cincinnati, OH
Date: 2013-05-11
Location: Downingtown, Pennsylvania
Date: 2022-05-30
an aggressive weed in the garden
Location: Downingtown, Pennsylvania
Date: 2022-05-30
another shot as a mass of a weed in the garden
Location: Downingtown, Pennsylvania
Date: 2022-05-30
view of a flower and stalk
Location: Downingtown, Pennsylvania
Date: 2022-05-30
as a mass of weeds in the vegetable garden
Location: Downingtown, Pennsylvania
Date: 2022-05-30
close-up of corms dug out of ground
Location: Downingtown, Pennsylvania
Date: 2022-05-30
close-up of spathe, (put on driveway)
Location: Downingtown, Pennsylvania
Date: 2022-05-30
flower and flowering stalk
Location: Downingtown, Pennsylvania
Date: 2022-05-30
group of plants with some flowers
Comments:
  • Posted by ILPARW (southeast Pennsylvania - Zone 6b) on May 30, 2022 12:04 PM concerning plant:
    About ten years ago I accidentally introduced a very aggressive and invasive weed into my vegetable garden by bringing back some vegetable as a gift from a person's garden about 15 miles away from home, accidentally bringing along a piece of this weed. It looks like a small Jack-in-the-Pulpit and sometimes is called Baby Jack-in-the-Pulpit or Japanese Cowdipper. It is native to China, Korea, and Japan. It has very trifoliate compound leaves with the middle leaf being the largest and longest. It bears slender green stalks that end in a small, narrow, green arum-spathe flower with a long thin stalk filament that sticks up out of the spathe and the bottom is dark and not green. The top of the spathe has pale lines along the edges. I don't find this plant to be beautiful. Its leaves sort of fall over and the flower is not conspicuous. It is so hard to get rid of because it forms little corms (bulbs) in the soil with some thin white rhizomes that can end in a bulbil. It takes a constant war of continual hoeing non-stop or other attacks to undo this pernicious little weed. It is supposed to have some medicinal properties in Asian medicine if one really knows what one is doing; otherwise has some toxicity.

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