Scientific NameRaphanus raphanistrum
Seedlings have stiff hairs on the stem and veined heart to kidney shaped cotyledons. Mature plants reach heights of 30-90 cm tall with branching, flowering stems arising from a basal rosette.
Basal leaves are oval shaped divided in to 5-15 segments. Lobes increase in size outward. Stem leaves are alternate and reach lengths of 7.5 cm long decreasing in size upward.
Alternately arranged deeply lobed leaves, yellow flowers with obvious veins and fruit pods that sink in between seeds.
Flower Seed Head
Clusters of yellow flowers on 10-25 mm stalks, appear June through September. Flowers have 4 petals, are 10 to 20 mm long, and sometimes have purple veins.
The Fruit is pod shaped like a pea pod only pointed on one end with tight constrictions between the seeds. Pods are 3-7.5 cm long with 4-10 seeds inside. Pods break into single seeded barrel-shaped segments. The rarely seen seeds are reddish brown and egg-shaped measuring 6 mm long and 2 mm wide.
Mostly found in the northeastern and north central states. This species is found in disturbed soils like fall seeded forage crops, cultivated agronomic and horticultural crops, and nurseries.
woody bush or tree
Thorns or Spines
Approximate Flower Diameter
Dominant Flower Color
longer than leaf
Stem Cross Section
round or oval