Alcea rosea Purple

Hollyhock

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Tall biennial herb with spikes of large, showy purple flowers. Hardy, drought-tolerant once established, prone to rust in humid conditions.
yard Outdoor plants wb_sunny Sun pets Pet Friendly
info Pot sizes shown are estimations. Real dimensions may vary depending on the merchant.
Merchant Pot Size Availability Price
Amazon.com 3-4 in Out of Stock $9.99 Buy
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Plant Details

Common Name Hollyhock
Family Malvaceae
Genus Alcea
Species Rosea
Variety Purple
Origin Europe, Asia Minor
Blooming Summer to early autumn, typically July through September.
Leaf Color Grey-green / Blue-green
Sunlight Sun
Category Outdoor plants
Pet Friendly check Yes
yard

Care & Maintenance

terrain
Soil

Well-drained, fertile loam. Tolerates poor soil but blooms best in rich earth with good drainage.

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Watering

Water regularly during establishment. Drought tolerant once mature. Water at base to prevent leaf rust.

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Sunlight & Care

Full sun required (6+ hours daily). Insufficient light leads to leggy growth and poor flowering.

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Fertilization

Low nitrogen, balanced fertilizer applied in early spring before budding.

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Pruning

Cut back stems after flowering. Deadhead to encourage blooms or allow self-seeding for next year.

Pest Control Aphid Japanese Beetle 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 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% – 75%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
30000 – 60000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
2000 – 4500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
25% – 70%
% 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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