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Kyushu Azalea

Rhododendron kiusianum

Kyushu Azalea
Photo: tsuda from Tsushima, Aichi, Japan, CC BY-SA 2.0

A small, compact evergreen shrub from Kyushu, Japan, and a parent of many popular dwarf hybrid azaleas, including Kurume types often grown as bonsai. The key to growing it is cool, humus-rich, acidic soil with bright but filtered light.

Family
Ericaceae (Heather family)
Grows as
Shrub
Light
Part shade
Water
Keep the root zone evenly moist and never let it dry out, using rainwater or soft water where possible.
Soil
Acidic, free-draining, humus-rich ericaceous mix
Temperature
5–25 °C; tolerates cold winters, protect from hot dry summers above 30 °C
How easy
Moderate
Safety
Toxic: All parts contain grayanotoxins, which can cause nausea, vomiting, low blood pressure and, in large amounts, serious poisoning.. Toxic to cats and dogs (ASPCA).
Native range
Japan (Kyushu)
Climate
temperate

About

Rhododendron kiusianum, the Kyushu azalea or Miyama-Kirishima, is a species of flowering plant in the family Ericaceae, native to Kyushu, Japan. It is a parent of a large number of hybrid dwarf azaleas, drawn from the naturally occurring Kurume azaleas used in bonsai. It is the official flower of Unzen, Nagasaki, and of Kagoshima Prefecture.

Other Rhododendron plants

Rhododendron album · Rhododendron anthopogon · Rhododendron argyrophyllum · Rhododendron augustinii · Rhododendron bureavii · Rhododendron calophytum · Rhododendron calostrotum · Bell Flowered Rhododendron · Bent-style rhododendron · Rhodora · Catawba rosebay · Georgian Snow Rose

Text excerpted from the Wikipedia article Rhododendron kiusianum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

Pet safety from the ASPCA toxic and non-toxic plant lists.

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