Hydrangea macrophylla Magical Amethyst

Magical Amethyst Hydrangea

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Deciduous shrub with blue-purple mophead blooms; requires cold dormancy and acidic soil for optimal flowering performance.
yard Outdoor plants wb_sunny Half-shade pets Not pet-safe
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Plant Details

Common Name Magical Amethyst Hydrangea
Family Hydrangeaceae
Genus Hydrangea
Species Macrophylla
Variety Magical Amethyst
Origin Japan / Cultivar
Blooming Summer to Autumn, color changes with soil pH
Leaf Color Dark green
Sunlight Half-shade
Category Outdoor plants
Pet Friendly close No
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Care & Maintenance

terrain
Soil

Acidic, peat-based ericaceous mix with good drainage and high organic matter retention.

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Watering

Keep soil consistently moist but not waterlogged; reduce watering during dormancy in winter.

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Sunlight & Care

Morning sun or dappled shade; protect from intense afternoon heat to prevent scorching.

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Fertilization

Apply balanced acid fertilizer in spring; switch to bloom booster before flowering starts.

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Pruning

Remove spent blooms after flowering; prune dead wood in late winter, avoid cutting old wood.

Pest Control Aphid Slug 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 8 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
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Growing Parameters

thermostat
Temperature
41° – 86°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 85%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
800 – 15000
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
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Soil Moisture
40% – 70%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1500
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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