Annual mullein (Verbascum boerhavii)

Annual mullein

Annual mullein is a biennial herb that is drought tolerant and often utilized in xeriscaping for its bronze-colored foliage. It usually blooms during the late spring/early summer. Annual mullein is poisonous if ingested and is less oval-shaped and 'toothy-leaved' than its most closely related relatives (to establish distinction).

Scientific classification

Species

Annual mullein (Verbascum boerhavii)

Mints plantains olives and allies

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Biennial

Lifespan

2.5 cm to 3 cm

Flower Size

Yellow

Flower Color

Semi-evergreen

Leaf type

20 - 35 ℃

Ideal Temperature

Images of Annual mullein

Distribution of Annual mullein

Distribution Map

Annual mullein is a plant that has its origins in the temperate regions of southern Europe. Over time, annual mullein has spread beyond its native range. While commonly found within its native habitats, annual mullein is also cultivated in various regions for its particular attributes, although the scope of its introduction to new territories is not specified in the provided data.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Margins of roads, stark slopes, vacant land, somewhat humid and nitrified disturbed land

Care Guide for Annual mullein

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Annual mullein prefers moderate rainfall and balanced moisture levels, tolerating moderate drought. It thrives with weekly watering and is deciduous, shedding leaves during dry periods to conserve water, showcasing its adaptability to varying climates.

Fertilize: Fertilize annual mullein monthly with a balanced fertilizer for growth, using high nitrogen during vegetative stages. Apply diluted at quarter strength to avoid root burn, and adjust feeding seasonally. Water annual mullein before fertilizing to improve nutrient absorption and reduce shock.

Pruning: Prune annual mullein in early to late spring by trimming dead stems to promote new growth and maintain shape. This prevents self-seeding and controls spread. Removing spent flowers enhances blooming and plant health. Use clean tools to avoid disease and promote vigor for better flower production.

Propagation: Annual mullein propagates best via sowing in well-draining soil with consistent moisture, avoiding waterlogging. It thrives in sunny spots, requiring thinning of seedlings to prevent overcrowding. Careful transplanting is essential to avoid root disturbance, and selecting a site resembling annual mullein's natural habitat enhances growth.

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