WILD RADISH, Rophanus raphanistrum L. 1, upper part of plant with pods and flowers; 2, lower part of plant; 3, flower; 4, seedling plant; 5, pod with section. Annual or winter annual, reproducing by seeds. Stems erect, branching above, 1 to 3 feet (30 to 90 cm) tall, sparsely pubescent with stiff hairs, especially on lower parts. Leaves on lower stem with same type of pubescence, pinnately divided with a large rounded terminal segment. Upper leaves mostly undivided but with a few small segments. Flowers light yellow, shading into a whitish or purplish color, 1/2 inch (1.3 cm) in diameter, with 4 petals. Seed pods pithy and solid, 1-1/2 to 3 inches (3.8 to 7.5 cm) long, 1/8 inch (3 mm) in diameter, at maturity breaking into segments containing seeds. Lower pods usually small and seedless. Seeds vary in size and shape but are usually oval, slightly flattened, light reddish-brown, and 3/16 inch (4.5 mm) in diameter. Found in small grain and flax crops, where it is serious; also common in wastelands. Pod segments containing seeds are hard to remove from seed grain.