Catawba rhododendron (Rhododendron catawbiense × maximum)
Care, watering, light and tips for Catawba rhododendron on Floravia.
Quick facts
- Family: Ericaceae
- Difficulty: Demanding
- Watering: every 4 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Catawba rhododendron
Rhododendron catawbiense × maximum, a robust hybrid, is an evergreen shrub known for its large, showy flowers in shades of pink, lilac, or white, blooming in spring. It is ideal for creating impressive mass plantings or as a specimen plant in woodland or semi-shaded gardens, adding a touch of color and elegance. Its dense, glossy foliage provides year-round appeal.
Native range
Southeastern United States
Care tips
It prefers partial or filtered shade, avoiding direct midday sun which can scorch its leaves. It requires acidic soil (pH 4.5-5.5), well-drained, rich in organic matter, and consistently moist; never allow the substrate to dry out completely. It's crucial to avoid waterlogging, which can lead to root rot, and protect it from strong winds and late frosts. A common mistake is planting it in alkaline or heavy soils.
How to save a dying Catawba rhododendron
- Warning signs
- Yellowing or browning leaves, dropping; soft, drooping shoots; no blooms or wilting flowers.
- First aid
- Check drainage and soil acidity (pH 4.5-5.5). Water with lime-free water. Prune dry or diseased branches.
- What kills it
- Alkaline or compacted soil, poor drainage, too much direct sun, lack of watering in summer.
- Can it be saved?
- Yes, if you act quickly. Repotting into acidic, well-draining soil can be crucial. Control watering.