Ornatec InternationalSpecies reference sheet ยท ornatecinternational.com
Rhododendron simsii
Indian Azalea
Almost every florist azalea in the world traces back to Rhododendron simsii, a compact evergreen shrub from the hill forests of southern China that flowers so heavily the foliage disappears behind it. Funnel-shaped blooms in red, pink or white cover the plant in spring.
The conditions it needs are non-negotiable: acidic soil, humus, steady moisture and shelter from hot direct sun. Where those can be provided it is one of the most spectacular flowering shrubs available; where they cannot, it should not be specified.
Specifications
- Height1 to 2 metres, with the species reaching 3 metres
- Width1 to 1.5 metres
- Native toSouthern and eastern China, Taiwan, Myanmar and Thailand
- FoliageSmall elliptic dark green leaves with fine brown hairs; evergreen to semi-evergreen
- Growth rateSlow to moderate
Conditions
- SoilRequires acidic, humus-rich, moist, free-draining soils; will not tolerate alkaline or saline ground
- LightPartial shade, with shelter from hot direct sun
- WaterModerate to high; needs consistent moisture and shallow roots dry out fast
- ClimateThrives in humid warm temperate and subtropical regions
Additional Features
- FlowersFunnel-shaped flowers in red, pink or white, borne so profusely in spring that they hide the foliage
- UsesShaded shrub borders, courtyard and container planting, interior flowering display and formal massing
- SpacingPlant 0.8 to 1.0 metres apart for a continuous mass
- Low MaintenanceRequires acidic conditions, mulch and reliable irrigation; light shaping after flowering
- Pest ResistanceGenerally sound where drainage and airflow are good; lace bug appears in dry heat
- Seasonal AppealA single overwhelming spring display, with neat evergreen structure the rest of the year
- ToxicityAll parts contain grayanotoxins and are toxic if ingested
The Indian Azalea is the spring flowering shrub for acidic, shaded and humid schemes, and only for those.
Availability by project review. Sizes, quantities, origin and export readiness are confirmed after your plant schedule is reviewed against destination, timing and quarantine requirements. MEWA certified for supply into Saudi Arabia; Australian Export Registered Establishment.
Enquiries: sales@ornatecinternational.com
310 Donkin Rd, Utchee Creek QLD 4871, Australia
Prepared 08 September 2026