Verbascum nigrum

Black Mullein

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A biennial herbaceous plant featuring tall yellow flower spikes and dense woolly grey-green leaves, native to Europe and Asia.
yard Kitchen garden plants wb_sunny Sun pets Not pet-safe
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Plant Details

Common Name Black Mullein
Family Scrophulariaceae
Genus Verbascum
Species Nigrum
Origin Europe / Asia
Blooming Biennial, flowers in summer on second-year rosette
Leaf Color Grey-green, woolly
Sunlight Sun
Category Kitchen garden plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Well-drained, sandy or loamy soil; tolerates poor conditions and alkaline substrates.

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Watering

Drought tolerant once established. Water regularly during first year to establish roots. Avoid waterlogging.

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Sunlight & Care

Requires full sun exposure for optimal growth and flowering; leggy in shade.

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Fertilization

Low nutrient requirements. Apply compost or slow-release fertilizer in early spring.

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Pruning

Deadhead spent flowers to prevent excessive self-seeding. Cut back after flowering as a biennial.

Pest Control Aphid Slug Snail

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 3 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 12 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
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Growing Parameters

thermostat
Temperature
5° – 100°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
20% – 70%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
3000 – 60000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
2000 – 4500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
10% – 45%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1500
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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