Photo by Melody

PlantFiles: Encore Azalea
Rhododendron 'Autumn Rouge'

Family: Ericaceae (er-ek-AY-see-ee) (Info)
Genus: Rhododendron (roh-do-DEN-dron) (Info)
Cultivar: Autumn Rouge
Additional cultivar information: (PP10438; EncoreAzalea series, aka Conlea)

» View all varieties of Azaleas and Rhododendrons

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One member has or wants this plant for trade.


36-48 in. (90-120 cm)

36-48 in. (90-120 cm)

USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Light Shade

Parts of plant are poisonous if ingested

Bloom Color:
Scarlet (Dark Red)

Bloom Time:
Late Winter/Early Spring
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Late Fall/Early Winter
Blooms repeatedly

Good Fall Color

Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater

Patent Information:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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By rparker2
Thumbnail #1 of Rhododendron  by rparker2

By GardenBeadle
Thumbnail #2 of Rhododendron  by GardenBeadle

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2 positives
No neutrals
No negatives

Gardeners' Notes:

Positive GardenBeadle On Apr 24, 2010, GardenBeadle from Mansfield, TX (Zone 7b) wrote:

I live in North Central Texas and have alkaline clay soil that I minimally amended (just a bit of compost tilled in). My Autumn Rouge azalea's have done well for 3 years almost doubling in size although they aren't thriving here. They are planted on the north side of my house and only recieve a bit of dappled sun in the late evening and full shade the rest of the day. They bloom a little in the spring and well in the fall but they have not bloomed in the summer here. They are well worth growing even if you don't have the perfect site conditions.

Positive brucehenderson On Jul 8, 2007, brucehenderson from Shreveport, LA wrote:

There is a reason this was originally described as the developer's favorite. Great color, goes w/ most color schemes (neither purple or orange tint to the deep reddish pink). Nearly non-stop blooming from July till Frost and again in spring (sorry, not in May-June in zone 8). Nice rounded shape (less upright than Autumn Royalty). Takes full sun but faster growth in part shade.


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

Prattville, Alabama
Shreveport, Louisiana
Morehead City, North Carolina
Raleigh, North Carolina
Conway, South Carolina
Mansfield, Texas
Pasco, Washington

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