- Verbascum blattaria is a perennial plant that can grow 2-4 ft. (0.6-1.2 m) tall and is usually unbranched.
- Basal leaves from a rosette 8-12 in. (20.3-30.5 cm) across. Stem leaves are alternate, up to 6 in. (15.2 cm) long, and lanceolate with margins that are usually crenate. Lower leaves clasp the stems but the upper leaves are more likely to be sessile.
- Flowers are up to 1 in. (2.5 cm) across and have 5 white to pale yellow petals with some purple coloring close to the center. The blooming period occurs during the summer.
- Fruit is a round, hairy, fleshy, 0.3 in. (0.85 cm) long, greenish capsule containing many small dark brown seeds with wavy ridges.
- Ecological Threat
- Verbascum blattaria prefers highly disturbed areas including pastures, vacant lots, roadsides, and abandoned fields. It is native to Eurasia.
- University of California, Jepson Flora Project
- Colorado Weed Management Association
- Virginia Tech Weed Identification Guide
- Flora of China, www.eFloras.org
- USDA NRCS PLANTS
- USDA ARS GRIN