Mineral Wildflower Festival

Technical Name

• Barbarea orthoceras

Informal Names

• American yellowrocket

• American wintercress

• Erect-pod wintercress

• Winter cress

Key Characteristics

• The Bright Yellow Racemes: Features dense terminal spikes or clusters (racemes) of small, bright yellow flowers at the tips of the upper stem branches.

• Lyrate Basal Leaves: It produces a distinct rosette of dark, glossy green, slightly fleshy basal leaves. These leaves feature a large, rounded terminal lobe accompanied by 2 to 4 smaller, pairs of lateral lobes hugging the leaf stalk.

• Stiff, Erect Stems: The plant sends up a stiff, hairless, often ridged or angled central stem that branches primarily toward the top, reaching anywhere from 8 to 24 inches in height.

• Straight, Upright Fruit Pods: As the flowers fade, they develop into straight, narrow, pencil-thin seed pods (siliques) up to 2 inches long that unique press closely or point strictly upward parallel to the stem.

Notable Significance

• The Mustard Identity: Though it shares common names with garden "rockets" (like arugula), it belongs strictly to the mustard and cabbage family (Brassicaceae).

• Edible and Culinary History: True to its wintercress moniker, the young, tender spring leaves are rich in Vitamin C and can be eaten raw in salads or boiled as a potherb. The roots carry a sharp, pungent kick closely resembling horseradish.

• Early Season Resiliency: It is exceptionally cold-hardy, allowing it to emerge and bolt rapidly while spring mountain soils are still icy and saturated with melting mountain snow.

Locations Found

• Habitat: A specialist of damp or vernally wet ecosystems. It thrives beautifully in open mountain meadows, damp riparian zones, stream and riverbanks, gravel bars, and muddy roadside ditches.

• Elevation Range: A widespread North American native operating at elevations ranging from 2,100 to 10,000 feet. It is highly at home in the moist understory openings, seeps, and transition zones across the southern Cascade and Lassen foothills surrounding Mineral.