Field penny-cress

Thlaspi arvense

Importance

Annual weed found in arable land and wastelands thoughout Britain.

Field penny-cress1. Cotyledons oblong and curved over at tip. Leaves are light and bright green.
Field penny-cress - young2. First true leaves oval and later leaves have projecting teeth at tip.
Field penny-cress - mature3. Mature plant is erect and leafy with small white flowers. Produces flat and circular seed pods like pennies. Plants smell when crushed.