Verbascum thapsus

Great Mullein

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Great Mullein is a biennial herb with thick woolly leaves forming a rosette, growing tall yellow flower spikes in its second year. Native to Europe and Asia.
yard Kitchen garden plants wb_sunny Sun pets Not pet-safe
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Plant Details

Common Name Great Mullein
Family Plantaginaceae
Genus Verbascum
Species Thapsus
Origin Europe / Asia
Blooming Biennial, flowers in second year summer
Leaf Color Grey-green with white hairs
Sunlight Sun
Category Kitchen garden plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Well-drained sandy or loamy soil, tolerates poor and dry conditions

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Watering

Water moderately during establishment, highly drought tolerant once mature, avoid waterlogging

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Sunlight & Care

Requires full sun exposure for optimal height and flowering, shade causes leggy growth

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Fertilization

Low nutrient requirements, minimal fertilization needed annually in spring

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Pruning

Cut back dead flowering stalks after bloom to prevent self-seeding

Pest Control Aphid Caterpillar

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
thermostat

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)
2500 – 35000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1200 – 4500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
10% – 50%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1800
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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