Geranium psilostemon

Storksbill

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Herbaceous perennial with deeply lobed grey-green foliage and vibrant pink-purple flowers; highly drought-tolerant native of Mediterranean rocky slopes.
yard Outdoor plants wb_sunny Sun pets Pet Friendly
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Plant Details

Common Name Storksbill
Family Geraniaceae
Genus Geranium
Species Psilostemon
Origin Mediterranean Basin
Blooming Spring to Summer, often reblooms in autumn if deadheaded.
Leaf Color Grey-green (glauca)
Sunlight Sun
Category Outdoor plants
Pet Friendly check Yes
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Care & Maintenance

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Soil

Well-drained, gritty soil; mix sand with loam to prevent root rot.

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Watering

Moderate; allow topsoil to dry between waterings. Drought tolerant once established.

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Sunlight & Care

Prefers full sun for best flowering; tolerates partial shade in hot climates.

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Fertilization

Apply balanced fertilizer monthly during growing season; reduce in winter dormancy.

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Pruning

Cut back by half after flowering to encourage second bloom and tidy appearance.

Pest Control Aphid Leaf Miner Slug Thrip

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)
1500 – 40000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
5 – 30
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
20% – 60%
% 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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Common Problems

Something wrong with your Geranium psilostemon? Select a symptom to diagnose and fix the issue.

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