Rhododendron hybridum hort.
Rhododendron
Common names: Azalea
At a glance
- Light
- Partial shade
- Pot size
- from 50 l
- Lifespan
- Perennial
- Flowering
- Apr–Jun
- Hardiness
- Hardy
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Description
The rhododendron is an evergreen flowering shrub from the heath family (Ericaceae) and is one of the most popular ornamental trees in the DACH region. With its large flower spikes in white, pink, red, purple, or yellow, it provides colorful accents in the garden from April to June. It can be used as a solitary plant, in shrub groups, or as a naturalistic hedge under light trees, especially effective with ferns, hydrangeas, and other semi‑shade perennials. In commerce, almost exclusively hybrids and cultivars are available, such as the lime‑tolerant Inkarho® graft or early‑blooming varieties like 'Praecox'.
Care instructions
Plant your rhododendron in a semi‑shaded location with a humus‑rich, loose, and well‑drained acidic soil, peaty or lime‑rich soils are not tolerated. Water regularly with low‑calcium water, especially during dry periods and on frost‑free winter days, because the evergreen shrub also loses water in winter. After flowering, prune dead flower heads directly below the flower base to promote bud formation for the next year, shaping cuts are rarely needed. A drainage layer when planting helps avoid waterlogging.
Garden year
FloweringApr–Jun
Soil & site
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