Rhododendron simsii

Indian Azalea

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Evergreen shrub renowned for vibrant spring blooms. Requires acidic soil and cool temperatures. Popular indoor plant, sensitive to lime in water.
yard Outdoor plants wb_sunny Half-shade pets Not pet-safe
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Plant Details

Common Name Indian Azalea
Family Ericaceae
Genus Rhododendron
Species Simsii
Origin China
Blooming Spring flowering shrub, often blooms indoors under controlled conditions
Leaf Color Dark green, glossy
Sunlight Half-shade
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Acidic peat-based potting mix, excellent drainage required to prevent root rot

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Watering

Keep soil consistently moist but not waterlogged. Use rain or distilled water to avoid alkalinity issues

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Sunlight & Care

Bright indirect light, avoid direct hot sun which scorches leaves and drops buds

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Fertilization

Feed with acidic fertilizer during growth season, reduce significantly after flowering

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Pruning

Prune immediately after flowering to maintain shape and remove spent blooms

Pest Control Aphid Scale Insect 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 2 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° – 75°
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)
1000 – 20000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
50 – 400
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
30% – 65%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1200
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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