Verbascum Species, Greek Mullein, Olympic Mullein, Wild Verbascum

Verbascumolympicum

Family
Scrophulariaceae (skrof-yoo-larr-ee-AY-see-ee)
Genus
Verbascum (ver-BASK-um)
Species
olympicum (oh-LIM-pih-kum)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Succulent
Height
6-8 ft. (1.8-2.4 m)
Spacing
18-24 in. (45-60 cm)
Hardiness
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
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)
Bloom Color
Bright Yellow
Bloom Time
Mid Summer
Other Details
Category
Biennials
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Bronze
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
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
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost
This plant is monocarpic
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Ontario, California

Richmond, California

San Jose, California

Santa Clara, California

Afton, Minnesota

Helena, Montana

Grand Prairie, Texas

Floyd, Virginia

Waverly, Virginia

Clinton, Washington

White Center, Washington

show all

Featured Videos

Gardener's Notes:

3
positives
1
neutral
0
negative
Sort By:
Sort By:
B
White Center, WA | May 2022 | positive

Wonderful plant if you have the room. (And if you don’t, you should make room!)

Just for accuracy, this plant is not nat...Read More

T
Waverly, VA | June 2018 | positive

These are amazing for us in SE Virginia, zone 7b. Blooming at 7 feet tall for about a month.

B
Afton, MN | August 2008 | positive

I have several of these in my very sandy, hot, dry garden (zone 4). The largest is approx. 6 feet tall and has been in bloom since late J...Read More

B
B
Baa
| January 2003 | neutral

A tall, evergreen perennial from Greece.

Has large, lance shaped leaves densely covered with grey/white hairs. Has a tall,...Read More

Featured
Crane Fly
(Tipula longiventris)
Red-necked Grebe
(Podiceps grisegena)
Featured
Crane Fly
(Tipula longiventris)
Red-necked Grebe
(Podiceps grisegena)