Agastache rugosa

Korean Mint / Giant Hyssop

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Herbaceous perennial known for aromatic foliage and spikes of tubular purple-blue flowers, valued in gardens and as a culinary herb.
yard Outdoor plants wb_sunny Half-shade / Sun pets Pet Friendly
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Plant Details

Common Name Korean Mint / Giant Hyssop
Family Lamiaceae
Genus Agastache
Species Rugosa
Origin East Asia
Blooming Summer to early autumn with spikes of fragrant flowers
Leaf Color Grey-green textured
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly check Yes
yard

Care & Maintenance

terrain
Soil

Well-draining loamy soil or sandy mix; dislikes waterlogging

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Watering

Moderate watering, allow topsoil to dry between waterings; drought tolerant once established

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Sunlight & Care

Requires full sun for optimal growth and flowering intensity indoors near window

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Fertilization

Low nutrient needs, apply balanced liquid fertilizer monthly during active growing season

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Pruning

Deadhead spent flowers to encourage reblooming and cut back hard in late autumn or early spring

Pest Control Aphid Spider Mite Whitefly

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
54° – 86°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 75%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
3000 – 50000
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
20% – 65%
% 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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