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Herbwilliam

Ptilimnium capillaceum

Herbwilliam
Photo: Claire Herzog, CC BY 4.0

Herbwilliam is a small native herb of the carrot family found in the eastern and central United States, typically 4 to 31 inches tall. It grows in open woods, flatwoods and hammocks and tolerates a range of soils and light levels.

Family
Apiaceae (Carrot family)
Grows as
Perennial
Light
Full sun
Water
Keep soil evenly moist during the growing season, and let the top layer dry slightly between waterings.
Soil
Loamy sand, peaty soil or moist clay; well-drained but not dry.
Temperature
15–28 °C; hardy in temperate zones, protect from hard frost.
How easy
Moderate
Native range
C. & E. U.S.A., Cuba to Puerto Rico
Climate
temperate

About

Ptilimnium capillaceum, known by the common name of herbwilliam, is a member of the carrot family, Apiaceae. It is a perennial herb, native to the eastern United States, from Texas to Massachusetts.

Where it grows

This species' range encompasses eastern and central United States, stretching westward to Texas and south to Florida's Miami-Dade and Collier counties.

Other Ptilimnium plants

Ribbed mock bishopweed · Laceflower · Mock bishopweed

Text excerpted from the Wikipedia article Ptilimnium capillaceum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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