Rhododendron
Rhododendron
Rhododendron
A shrub for cool acidic woodland edges, sumptuous in spring when roots stay moist and aerated.
Checked by the editorial team – Updated July 2026
Rhododendron (Rhododendron) is a shrub in the Ericaceae family. It is mainly grown in partial shade, shade, in acidic, fertile, moist, Lourd soil, with a mature size around 0,15 m to 5 m. Its pink, violet, red, white flowering and hardiness to -25 deg C make it a plant to match carefully with place and purpose.
Botanical identity card
Gardener calendar
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Leaf season | ||||||||||||
| Care |
With rhododendron, refinement is not rarity but accuracy: the right place first, then the quiet gesture. For shrub habit, bushy, specimen, a well-trained plant is worth more than a forced one.
– Les Jardins d’un Chatelain
Portrait
A shrub for cool acidic woodland edges, sumptuous in spring when roots stay moist and aerated.
In a character garden, rhododendron is first used to build a scene: shrub habit, bushy, specimen, border. The position should be chosen before purchase, because the plant performs better when light, soil and mature size agree.
The reference record points to partial shade, shade and acidic, fertile, moist, Lourd soil. Respecting that match is the quiet economy of good gardening: fewer corrections, less water and cleaner pruning.
Notable varieties
| Variety or form | Useful character | Garden situation |
|---|---|---|
| Rhododendron ponticum ‘Variegatum’ | pink, violet – shrub habit – 3 m to 5 m | shrub habit, bushy, specimen |
| Rhododendron x ‘Albert Schweitzer’ | pink, red – shrub habit – 2,5 m to 3 m | shrub habit, bushy, specimen |
| Rhododendron x ‘Anah Rose With’ | pink – shrub habit – 1,5 m to 2 m | shrub habit, bushy, specimen |
| Rhododendron x ‘Anna Rose Whitney’ | pink – shrub habit – 2 m to 2,5 m | shrub habit, bushy, specimen |
| Rhododendron x ‘Azurika’ | violet – shrub habit – 1 m to 1,5 m | shrub habit, bushy, specimen |
| Rhododendron x ‘Baden Baden’ | red – shrub habit – 0,15 m to 0,5 m | shrub habit, bushy, specimen |
The Chatelain Method
Observe
Look for acidic soil, bright shade and regular moisture.
Diagnose
Yellow leaves show lime stress or suffocated roots.
Correct
Use acidic organic matter and lime-free water.
Prevent
Mulch broadly and avoid deep soil disturbance.
Frequently asked questions
When should Rhododendron be planted?
Use the calendar above as the first guide. Outside frost, heatwaves and waterlogged soil, planting works best while the ground is cool and workable.
Which exposure is best?
Rhododendron prefers partial shade, shade. In hot climates, shelter from the harshest sun reduces stress.
What soil does it need?
The reference data points to acidic, fertile, moist, Lourd soil. Improve the planting hole before planting rather than correcting later.
Is Rhododendron hardy?
Available data indicates hardiness down to -25 deg C, to be adjusted for wind, winter wet and plant age.