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PlantSnap
Plant Care
Common mullein
(Verbascum thapsus)
Also Known As
Common mullein, Great mullein, Silk mullein, Wild mullein, Woolly mullein
About This Plant
Verbascum thapsus, also known as Great Mullein, is a biennial plant species that can grow up to 6.5 feet (2 meters) tall. It has a tall and erect stem with large, woolly leaves and produces a tall spike of yellow flowers.
Plant Care Instructions
Outdoor Size Range
3-6.5 feet (0.9-2 meters)
Light Requirements
Great Mullein prefers full sun but can tolerate partial shade.
Humidity Needs
It can tolerate low humidity levels.
Fertilizing Schedule
It does not require fertilization.
Pruning Guidelines
Prune the plant after it has finished flowering to promote bushier growth and prevent self-seeding.
Common Pests and Diseases
Great Mullein is relatively pest-free but can be affected by spider mites and aphids.
Indoor Size Range
Not recommended for indoor growth
Watering Schedule
It is drought-tolerant and does not require frequent watering. Water only when the soil is dry.
Temperature Range
It can tolerate a wide range of temperatures, from -40°F (-40°C) to 100°F (38°C).
Growing Season
Great Mullein grows in the summer and blooms in the second year.
Growing Difficulty Level
Great Mullein is easy to grow and requires minimal maintenance.
USDA Hardiness Zones
3-9
Did You Know?
Great Mullein has been used for medicinal purposes for centuries and is believed to have healing properties for respiratory ailments such as coughs and bronchitis.
