Verbascum Species, Wavy-Leaf Mullein, Wild Verbascum
Verbascumundulatum

Family: Scrophulariaceae (skrof-yoo-larr-ee-AY-see-ee)
Genus: Verbascum (ver-BASK-um)
Species: undulatum (un-dew-LAY-tum)

Synonym:Verbascum calaurium

Synonym:Verbascum plicatum

Synonym:Verbascum rigidum

Synonym:Verbascum undulatum subsp. rigidum

Category
Biennials

Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater

Sun Exposure
Full Sun

Foliage
Grown for foliage
Succulent

Foliage Color
Chartreuse/Yellow

Height
18-24 in. (45-60 cm)

Spacing
24-36 in. (60-90 cm)

Hardiness
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)

Where to Grow

Danger

Bloom Color
Pale Pink
Inconspicuous/none

Bloom Characteristics

Bloom Size

Bloom Time

Other details

Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information
Non-patented

Propagation Methods

Seed Collecting