Alcea Lilac

Hollyhock 'Lilac'

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Biennial or short-lived perennial hollyhock featuring tall spikes of soft lilac double flowers, reaching up to 2 meters in height with Victorian charm.
yard Outdoor plants wb_sunny Sun pets Not pet-safe
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Plant Details

Common Name Hollyhock 'Lilac'
Family Malvaceae
Genus Alcea
Species Rosea
Variety Lilac
Origin Europe, Asia Minor
Blooming Summer to early autumn, tall spikes of flowers.
Leaf Color Grey-green, lobed and hairy
Sunlight Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Rich, well-drained loam; tolerant of poor soil but prefers fertile conditions for robust growth.

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Watering

Regular watering during establishment and dry spells; drought tolerant once established.

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Sunlight & Care

Full sun exposure required for optimal flowering and strong stem development.

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Fertilization

Apply balanced fertilizer in spring before blooming to support tall growth.

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Pruning

Deadhead spent flowers to extend bloom season or cut back after flowering for winter dormancy.

Pest Control Aphid Japanese Beetle 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
5° – 95°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
30% – 80%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
4000 – 100000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
800 – 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
400 – 2000
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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