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Rhododendron austrinum

orange azalea add to wishlist

Plant types and subtypes: Root Catalog, Trees & Shrubs, Shrubs, Deciduous

Light Requirements: part-sun, part-shade

Water Use: low, medium

Soil Moisture: dry, moist

Soil Description: acid, rich, average, loam, sand

Height: 6'-10'

Bloom Time: March, April

Bloom Color: yellow, orange

Leaf Color: green

Hardiness Zone: 7, 8, 9

Additional Tags: attracts bees, attracts butterflies, attracts hummingbirds, fragrant flowers, naturalizing, poisonous, shade garden plant

Rhododendron austrinum

Pricing & Availability

Description

Rhododendron austrinum

Also known as:

orange azalea

,

Florida azalea

,

yellow azalea

,

Florida flame azalea

,

honeysuckle azalea

,

southern yellow azalea

Scientific Synonyms:

Azalea austrina

Description

Rhododendron austrinum is one of the most attractive, and easiest to grow, of the native azaleas. This deciduous shrub can grow to a height of 10', with a spread of up to 6'. It flowers in early to mid-spring just before, or just as, the leaves begin to develop. The blooms are made up of terminal clusters of 8 to 15, pleasantly fragrant, yellow to orange, 3/4" tubular flowers with long, protruding stamens. These give way to 1" long woody seed capsules.

Cultivation

Rhododendron austrinum is easy to grow, in acidic, humus rich, well drained soil. It does not tolerate poorly drained soil: consistently "wet feet" will invariably lead to root rot. It thrives in sandy environments, with a layer of mulch to help preserve moisture and a high level of acidity, and will endure short dry spells once established. It is best not to cultivate too close to the shrub, as doing so could easily damage the plant's shallow root system. Under certain circumstances, this azalea may slowly naturalize via root suckers. Filtered light is best. Zones 7-9

Propagation

Can be propagated from seed, without pretreatment. This should be done in a light, moist medium, under cool temperatures, in the 40's or 50's. It may also be propagated from cuttings, or by separating and transplanting suckers.

Additional Notes

Orange azalea is native a limited range in the southeastern US, and is even listed as endangered in Florida. However, its inherent beauty and ease of cultivation, have made very popular among breeders who have used it to create many different hybrids and cultivars.

Native Range & Classification

Recorded County Distribution: USDA data

Native Range:
AL, FL, GA, MS

USDA Endangered Status:

  • Endangered: FL

Classification

Kingdom Plantae Plants
Subkingdom Tracheobionta Vascular plants
Superdivision Spermatophyta Seed plants
Division Magnoliophyta Flowering plants
Class Magnoliopsida Dicotyledons
Subclass Dilleniidae
Order Ericales
Family Ericaceae Heath family
Genus Rhododendron rhododendron
Species Rhododendron austrinum orange azalea