Agastache rupestris

Rock Hyssop

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Drought-tolerant aromatic perennial with tubular lavender-blue flowers. Native to rocky slopes of North America and Mexico.
yard Outdoor plants wb_sunny Sun pets Pet Friendly
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Plant Details

Common Name Rock Hyssop
Family Lamiaceae
Genus Agastache
Species Rupestris
Origin Southwestern USA / Mexico
Blooming Summer to early autumn, lavender-blue tubular flowers
Leaf Color Green to gray-green
Sunlight Sun
Category Outdoor plants
Pet Friendly check Yes
yard

Care & Maintenance

terrain
Soil

Well-draining sandy or rocky soil, avoid heavy clay to prevent root rot

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Watering

Allow soil to dry completely between waterings, drought-tolerant once established

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Sunlight & Care

Full sun exposure required for optimal flowering and compact growth indoors

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Fertilization

Low nutrient needs, apply balanced fertilizer sparingly in early spring only

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Pruning

Deadhead spent flowers to encourage reblooming, cut back hard in late autumn

Pest Control Aphid 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
14° – 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 – 45000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1200 – 2500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
10% – 45%
% volumetric
Water content in the growing medium
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Soil EC
200 – 1500
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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