WSU Clark County Extension
PNW Plants Searchable, categorized images

Common Mullein

Scientific name: Verbascum thapsus
Taxonomy
Family:Scrophulariaceae
Type:Invasive plants
Native:NO
Plant Requirements
Zone:1 to 11
Sun:Full sun
Moisture:Dry
Plant Characteristics
Height:6 ft
Width:2 ft
Bloom:Summer flowers
Bloom Time:May to September
Bloom Color:Yellow
Additional Characteristics
Trees


Fruit

Leaves


Bark
Wildlife value

Poisonous
Description The rosette growth habit, large 'woolly' leaves and stems, and flowering stems with many yellow flowers are all characteristics that help in the identification of common mullein.

  Morphology:
This is a biennial herbaceous plant that is often known as a weed. It has rosette leaves which are covered with grayish, soft velvety hairs. It is called a biennial as it grows for 2 years. First year plants consist of the rosette stage, while second year plants produce a tall flower stalk that set flowers and seeds. The flower stalk can be up to 6’ tall. On un-disturbed sites in Washington it is considered an invasive species.

  Adaptation:
Mullein grows in areas that are not managed. If a site is mowed or planted with desirable vegetation it should not become a problem weed. Besides, the seeds need bare soil in which to germinate.

  Pests:
None.
For assistance, contact Dr. Charles Brun (brunc@wsu.edu), (360) 397-6060 5701
Computing and Web Resources, PO Box 6234, Washington State University, Pullman WA 99164-6234