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*Thlaspi arvense Linnaeus. Common name: Field Pennycress, Frenchweed. Phenology: Mar-Jun (-Sep); Apr-Jul (-Oct). Habitat: Fields, disturbed areas. Distribution: Native of Europe.

Origin/Endemic status: Europe

Synonymy ⓘ: = C, F, Fl4, FNA7, G, GrPl, Il, K4, Mi, NcTx, NE, NY, Pa, RAB, S, Tat, Tx, Va, W, WH3, WV, Al-Shehbaz (1986a), Rollins (1993), Stace (2021), (basionym)

Links to other floras: = Thlaspi arvense - FNA7

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: UPL
  • Eastern Mountains and Piedmont: UPL
  • Great Plains: FACU
  • Midwest: FACU
  • Northcentral & Northeast: UPL

Heliophily ⓘ: 9

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image of plantno rights reserved, uploaded by Kallum McDonald source CC0 | Original Image ⭷
image of plant© Николай Соболев, some rights reserved (CC BY), uploaded by Николай Соболев source CC-BY | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect annual of fields and other disturbed areas. Native of Europe.

Stems: Stems ribbed and sometimes winged, branched, smooth.

Leaves: Leaves alternate (a rosette of basal leaves may form first), mostly sessile with clasping lobes at the base, lance-shaped to narrowly oval, to 4 in. long, wavy-margined to blunt-toothed, smooth.

Inforescence:

Flowers: Flowers on stalks in terminal racemes, which elongate during blooming (flowers at top open first); white; less than 1/4 in. wide; consisting of 4 tiny spoon-shaped and round-tipped petals, 4 green sepals, 6 anthers and a green ovary.

Fruits: Fruit a green, round to oval, minutely winged pod.

Comments:

Height: 8-30 in.

plant sale text:

bloom table text:

description: Erect annual of fields and other disturbed areas. Native of Europe.

stems: Stems ribbed and sometimes winged, branched, smooth.

leaves: Leaves alternate (a rosette of basal leaves may form first), mostly sessile with clasping lobes at the base, lance-shaped to narrowly oval, to 4 in. long, wavy-margined to blunt-toothed, smooth.

inflorescence:

flowers: Flowers on stalks in terminal racemes, which elongate during blooming (flowers at top open first); white; less than 1/4 in. wide; consisting of 4 tiny spoon-shaped and round-tipped petals, 4 green sepals, 6 anthers and a green ovary.

fruits: Fruit a green, round to oval, minutely winged pod.

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cultural notes:

germination code:

native range: