Dracocephalum ruyschianum Blue Dragon

Chinese Dragonhead

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Compact perennial with aromatic mint-like leaves and vibrant blue-violet flowers in late spring to summer.
yard Outdoor plants wb_sunny Half-shade / Sun pets Not pet-safe
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Plant Details

Common Name Chinese Dragonhead
Family Lamiaceae
Genus Dracocephalum
Species Ruyschianum
Variety Blue Dragon
Origin China
Blooming Late spring to early summer, occasionally reblooms if deadheaded
Leaf Color Medium green
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Well-draining loamy soil mixed with perlite or coarse sand for optimal root aeration

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Watering

Water regularly during active growth, allowing topsoil to dry slightly between waterings. Reduce watering in winter dormancy.

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Sunlight & Care

Prefers full sun to partial shade; ensure good light intensity to promote vibrant flowering and compact growth

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Fertilization

Apply balanced liquid fertilizer monthly during spring and summer growing season only

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Pruning

Deadhead spent flowers to encourage rebloom; cut back stems after flowering or in late autumn

Pest Control Aphid Slug Spider Mite

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 4 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
41° – 82°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 70%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
2000 – 30000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1000 – 2500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
30% – 65%
% volumetric
Water content in the growing medium
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Soil EC
400 – 1800
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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