Field penny-cress
Thlaspi arvense L.
- light
- Sun–part
- water
- Medium
- tall
- 60 cm
- wide
- —
Brassicaceae
Also called Field pennycress, Field penny cress, Fanweed, French Weed, Mithridate Mustard
Formerly Crucifera thlaspi, Lepidium thlaspi, Teruncius arvensis, Thlaspi baicalense, and 4 more
When it flowers
Not known yet in the tropics: too few flowering observations to read a season from.
Read from iNaturalist photographs of it in flower. A month counts at 50% of the best month's flowering share (smoothed over three months) and 10% of its flowering count, from at least 100 flowering observations in the band.
If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.
Something wrong with it?About it
- Grows as
- AnnualKew's checklist, not yet checked
- Climate
- TemperateKew's checklist, not yet checked
- Wild in
- Temp. EurasiaKew's checklist, not yet checked
- Light
- Full sun to part shade (3 h or more)Read from NC State Extension, one source
- Height
- 41 cm to 79 cmRead from Wikipedia, one source
- Water
- Average: moist, well drainedRead from NC State Extension, one source
- Flowers
- WhiteRead from NC State Extension and Wikipedia, checked by a majority of its sourcesBacked by both sources. Sources differ: NC State Extension white; Wikipedia pink, white
Not known yet: spread, coldest it survives, heat, hottest it survives.
In other languages (12)
- root
- THLARV, Codywasg y maes
- French
- tabouret des champs
- Spanish
- carraspique
- Russian
- Ярутка полевая
- German
- Acker-Hellerkraut, Ackertäschelkraut
- Swedish
- penningört
- Czech
- penízek rolní
- Japanese
- グンバイナズナ
- Chinese
- 凹果菥蓂, 菥蓂, 凹果薪蓂
- Danish
- Almindelig pengeurt
- Korean
- 말냉이
- Norwegian Bokmål
- pengeurt
Where this comes from
- iNaturalist, read 2026-10-26, CC0-1.0 (observation counts)
- Wikidata, read 2026-10-25, CC0-1.0
- Kew's checklist, read 2026-10-24, CC-BY-4.0
- NC State Extension, read 2026-10-25, fact, cited
- Wikipedia, read 2026-10-25, fact, cited
- Wikimedia Commons, read 2026-10-25, CC BY-SA 3.0
- iNaturalist, read 2026-10-26, CC BY
- iNaturalist, read 2026-10-26, CC BY
- iNaturalist, read 2026-10-26, CC0
- 3D model: Thlaspi arvense (built for Vanagrha) by Vanagrha, own
A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.