Grodd- och ungplantor.
Övervintrande ungplanta (bladrosett).
Almindelig Vinterkarse, Läänekollakas, Peltokanankaali, Gewoon barbarakruid, Garðableikja, Parasta zverene, Paprastoji barboryte, Vinterkarse, Gorczycznik pospolity, Сурепка обыкновенная, Echtes Barbarakraut, Sommargyllen
Cotyledons 5–6 mm long and 3 mm broad, oval–nearly round, petioled, hairless. First true leaves circular–kidney-/heart-shaped, then lyrate with a rounded, often cordate, terminal lobe and 2–5 pairs of oblong lateral lobes. Upper leaves, sheathing at base, shorter, obovate with 0–5 lobes. All leaves glabrous and fairly thick and deep green. Stems erect, 30–80 cm, usually branched from ground-level upwards, stiff, stout, furrowed, glabrous. Flowers golden yellow in pyramidal inflorescence terminating stem and branches. Flower buds glabrous. Reproduces mostly by seeds, but detached pieces of the tap root can regenerate from adventitious buds. Site in all kinds of soils (nutrient-rich). Leys, meadows, pastures, headlands, roadsides etc. and ruderals. Biennial or perennial.