Rhododendron rubiginosum

Rusty-leaved Rhododendron

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Evergreen shrub with distinctive rusty brown leaf undersides, native to the Himalayas. Produces clusters of pink bell-shaped flowers in spring.
yard Outdoor plants wb_sunny Half-shade pets Not pet-safe
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Plant Details

Common Name Rusty-leaved Rhododendron
Family Ericaceae
Genus Rhododendron
Species Rubiginosum
Origin Himalayas (Tibet, Nepal)
Blooming Pink bell-shaped flowers in clusters, late spring to early summer
Leaf Color Dark green above, rusty brown beneath
Sunlight Half-shade
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Acidic peat-based mix with perlite, pH 4.5-6.0

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Watering

Keep soil consistently moist but not waterlogged; use rainwater if possible for acidity

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Sunlight & Care

Filtered sunlight or partial shade; protect from harsh midday sun to prevent leaf scorch

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Fertilization

Apply ericaceous fertilizer in spring and early summer; avoid high nitrogen in late season

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Pruning

Prune after flowering to shape; remove dead or diseased wood immediately

Pest Control Aphid Leaf Miner Scale Insect 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
41° – 86°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 80%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
800 – 12000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
500 – 2000
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
350 – 2000
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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