Hiryu Azalea, Kurume Azalea 'Tradition'

Rhododendron x obtusum

Family: Ericaceae (er-ek-AY-see-ee) (Info)
Genus: Rhododendron (roh-do-DEN-dron) (Info)
Species: x obtusum
Cultivar: Tradition
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4-6 ft. (1.2-1.8 m)


36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)


USDA Zone 6b: to -20.5 C (-5 F)

Sun Exposure:

Light Shade


All parts of plant are poisonous if ingested

Bloom Color:


Bloom Time:

Mid Spring



Other details:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


This plant has been said to grow in the following regions:

Wilmington, Delaware

Louisville, Kentucky

Bedford, New Hampshire

Greenville, North Carolina

West Chester, Ohio

West Chester, Pennsylvania

Knoxville, Tennessee

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Gardeners' Notes:


On Feb 24, 2014, Rickwebb from Downingtown, PA wrote:

'Tradition' is one of the most common cultivars sold in Mid-Atlantic nurseries and garden centers. I love the Evergreen Azalea as a florist plant, but not really as a landscape plant. There is a number of very similar species of these East Asian shrubs that have the tiny evergreen leaves and many slender stems. They are very bushy in full sun to somewhat bushy, of better form, in part shade. They are best to grow outside in part shade and moist, acid soil. A few can make it in USDA Zone 5b, but Zone 6a is usually the farthest north. Many people plant Evergreen Azaleas in the mid-Atlantic region of the USA just anywhere; but they don't thrive in full sun, open and windy sites, and in dry soil. I've seen many become stunted and yellow in such places. They often get attacked by the Azalea Lac... read more


On Apr 7, 2012, Critt52 from Greenwood, IN wrote:

Just bought and planted this plant in zone 5 as it is being sold here regularly. Have seen it growing around this area but not often. Planted it in a well protected area with late morning to early evening sun as I have seen it rated full sun to partial shade at various websites. Hoping this will help it survive the zone 5 winters.