American Rhododendron Society Web Site ARS
navigation menu background

Rhododendron of the Year Plant Awards: 2021


South West USA Region

R. 'Horizon Lakeside

Elepidote Rhododendron: 'Horizon Lakeside'

Flower light yellow with a strong red throat and spots, saucer-shaped, wavy edges, 4" across.  Held in ball-shaped truss with 16 flowers.  Blooms early midseason.  Leaves elliptic, broadly acute apex, rounded base, slightly wavy edges, 4" long, retained 2 years.  Spreading moderately open habit.  Typical height: 4 feet in 10 years.  Plant and bud hardy to 5F (-15C).  Hybridized by Brockenbrough.

 
R. edgeworthii

Lepidote Rhododendron: R. edgeworthii

Flower white or white flushed pink, may have yellow blotch at base, funnel-campanulate shaped, fragrant.  Truss has 1 to 5 flowers.  Blooms early midseason.  Leaves oblong ovate, rarely elliptic, up to 6" long, upper surface bullate, underside has dense, light tan colored indumentum.  Upright, open growth habit.  Hardy to 15F (-9C).  Native species found in the wild in India, Bhutan and China.

 
R. 'Louise Gable'

Evergreen Azalea: 'Louise Gable'

Flower deep pink, marked on midribs and spotted on lower lobes with strong purplish red, openly funnel-shaped, slightly wavy edges, 2" across, semi double.  Truss holds 4 flowers.  Blooms midseason.  Leaves 2" long, glossy, light green.  Spreading, dense, low habit.  Typical height is 3 feet after 10 years.  Cold hardy to 5 F (-15C).  Hybridized by Gable.

 
R. 'Klondyke'

Deciduous Azalea: 'Klondyke'

Flower strong yellow, suffused with reddish-orange, with an orange-yellow blotch, funnel-shaped, 2⅜" to 3⅛" across.  Ball-shaped truss holds 8-15 flowers.  Blooms early midseason to midseason.  Deciduous.  Leaves deep brownish-red when new, deep bronze in autumn, mildew-resistant.  Broad, upright, dense growth habit.  Height: 5 ft. in 10 years.  Cold hardy to -15F (-26C).  Raised and introduced by Edmund de Rothschild.  Winner of the Royal Horticultural Society Award of Garden Merit.

Photos (top to bottom) by Steve Henning, Don Smart, Bob Stelloh, Kenneth Cox.

Prior Years Selections for South West USA Region

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004


American Rhododendron Society
P.O. Box 214, Great River, NY 11739
Ph: 631-533-0375   Fax: 866-883-8019   E-Mail: member@arsoffice.org
1998-2021, ARS, All rights reserved.