Rhododendron ferrugineum

Alpine Rose

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Evergreen alpine shrub featuring rust-colored hairs on leaf undersides, blooming with pink-purple clusters in late spring.
yard Outdoor plants wb_sunny Shade / Half-shade pets Not pet-safe
info

Plant Details

Common Name Alpine Rose
Family Ericaceae
Genus Rhododendron
Species Ferrugineum
Origin Alps and Pyrenees
Blooming Late spring to early summer, pink-to-purple flowers
Leaf Color Dark green above, rusty red below
Sunlight Shade / Half-shade
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Highly acidic ericaceous compost (pH 4.5-6.0), rich in organic matter with excellent drainage

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Watering

Keep soil consistently moist but never waterlogged; use rain or distilled water as tap water (lime) causes chlorosis

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Sunlight & Care

Bright indirect light essential; protect from harsh midday sun to prevent leaf scorch, prefers cool air temps

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Fertilization

Apply specialized ericaceous fertilizer in spring and early summer only; avoid high nitrogen during flowering

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Pruning

Minimal pruning required; remove dead wood after flowering, shape gently to maintain bushy form

Pest Control Aphid Rhododendron Leafhopper 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° – 82°
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)
5000 – 30000
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
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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