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Rhododendron Species
R. adenogynum Taliense s.s. Adenogynum (S. E. Tibet, China-Yunnan,
Szechwan 11,000-12,000 ft.)
Sun or Part Shade Low 3’ Late April White -15°F.
A well-furnished plant blanketed with large lance shaped, smooth-textured
jade green leaves underscored with thick felt-like pale beige indumentum
with cinnamon colored hairy stems. Trumpet-shaped white
veiled rose blooms with red freckling within, are held in flat-topped
trusses up to 12. (Fall 2014) 6”- 8”
R. alutaceum s. Taliense s.s Adenogynum (Yunnan, 12,000 ft.)
Sun or part Shade Medium 5’ Mid-April Rose -5°F.
Compact, habit with large oblong leaves with a leathery texture, the
underside having a thick and wooly light tan indumentum. Funnel
shaped, rose blossoms with blotched and spotted crimson set in trusses
of up to 12. 12”- 15”
∗R. arboreum s. and s.s. Arboreum. (Kashmir to Bhutan, Khasia Hills
5,000-10,000 ft.)
Sun Tall 6’ March Red to White +5°F.
The smooth-textured, somewhat glossy dark green foliage with whitish
indumentum blankets this tall and upright growing plant. The bellshaped
2" flowers range in color from blood red to white.
var. Alba - white rounded trusses. 10”- 12”
var. Berg - rose-pink rounded trusses. 12”- 15”
var. Roseum - dark rose flowers with crimson freckling. 10”- 12”, 12’-
15”
R. arizellum s. Falconeri (Upper Burma, India, China-Yunnan 9,000-
12,000 ft.)
Some Shade Medium 5’ Mid-April Creamy-Yellow +5°F.
Large deep green ovate-shaped leaves above, are interfaced with thick
bronze-colored indumentum beneath. The growth habit is upright, superstructured
with moderately branching stems that in 7-10 years will support
blooms with 15-25 flowers. These blooms can range in color from
creamy yellow to pink and possibly to white, all with a crimson eye
within. 12”- 15”
∗R. atlanticum s. Azalea s.s. Luteum (Eastern North America)
Sun or Part Shade Low 3’ Late May White -15°F.
This deciduous plant has an open and upright growing habit displaying
smooth-textured bright bluish-green foliage. The fragrant late May tubular
funnel-shaped flowers are held in trusses of 4-10 that range in colors
from white, white shaded pink, white blushed purple to pale yellow.
See Deciduous Azalea Section.
∗R. augustinii s. Triflorum s.s. Augustinii (China - Szechwan & Yunnan,
Tibet, 4,500-13,000 ft.)
Sun/Part Shade Medium 5’ April/May Blue/Lavender -5°F.
There are many different named forms of this tall, upright and compact
growing plant with smooth dark green narrow leaves. The 2” bell-shaped
flowers are held in clusters of 2-6. The flowers range in color from white,
pink, deep blue, pale lavender, etc.
Barto Blue - medium blue flowers. 12”- 15”
Berg Form - nice medium blue flowers. 12”- 15”
Blue Cloud - wisteria blue flowers. 12”- 15”
Cecil Smith Form - bright blue flowers. 15”- 18”
Chasmanthum - a pale lavender-blue flower. (Fall 2014) 8”- 10”
Electra - bright electric blue flowers. 12”- 15”
Green eye - blue flowers with a green eye. 8”- 10”
Lackamus Blue - flat lavender blue flowers. 10”- 12”
Marine - medium powdery blue flowers. 10”- 12”, 12”- 15”
Sinclair Form - clear medium blue flowers. (Fall 2014) 8”- 10”
Species Foundation - a bounty of medium blue. 15”- 18”
Tower Court - sky blue flowers. 8”- 10”, 12”- 15”
Windsor Form - a panorama of bright blue. 15”- 18”
R. barbatum s. and s.s. Barbatum (Nepal, Bhutan 9,400-11,300 ft.)
Some Shade Medium 4’ February/March Red +5°F.
An early blooming red with textured (bullate) leaves with bristles. The
growth habit is somewhat open and upright. 10”- 12” $30.00
R. bathyphyllum s. Taliense s.s. Roxieanum (S.E.Tibet, China-Yunnan,
Szechwan 11,000-14,000 ft.)
Sun or Part Shade Low 2’ Late April Pink to White -5°F.
Held in trusses of 10-15, pale pink to white 2” long bell-shaped flowers
are generously integrated with red freckling and beautifully displayed.
Deep olive green leaves on top are liberally coated with dense rusty
indumentum below, all engulfing this well-branching, rounded silhouette.
10”- 12”
∗R. bureavii s. Taliense s.s. Adenogynum. (China - Yunnan 11,000-
13,000 ft.)
Some Shade Medium 4’ Early May White 0°F.
A plant most noted for its beautiful foliage. The growth habit is compact,
dense and rounded with oblong dark green leaves and thick bronze-colored
indumentum. White trusses have pink/crimson markings. Plant
needs good drainage. 10”- 12”
∗R. calophytum s. Fortunei s.s. Calophytum. (China - Szechwan,
7,000-10,000 ft.)
Sun or Part Shade Tall 6’ Early April Pink to White -15°F.
This beautiful tree-like plant, grows with an open and spreading habit,
exhibiting large textured matte green leaves. The bell-shaped pink to
white flowers, are adorned with a red eye, and held in trusses up to 20.
White and pink forms. 12”- 15”
R. calostrotum s. Saluenense. (Upper Burma, Yunnan, S. E. Tibet, N. E.
Frontier Agency 10,000-15,000 ft.)
Sun or Part Shade Semi-Dwarf 2’ Early May Purple -5°F.
This plant is canopied with amply produced beautiful bluish-green
aromatic leaves above, and densely covered mahogany-colored scales
beneath. The widely funnel-shaped plum-colored flowers with crimson
freckling are poised in loose clusters. (Fall 2014) 8”- 10”
var. Gigha - Rosy-red flowers. 8”- 10”
∗R. campanulatum s. Campanulatum (Kashmir to Bhutan 9,000-
14,000 ft.)
Some Shade Medium 4’ Late April Lavender to White -5°F.
Leaves are elliptic, oblong-elliptic dark green above and mahogany indumentum
below. The upright and spreading plant has soft lavender to
white blooms with slight freckling in the throat.
var. aeruginosum - the juvenile foliage of pearl-gray/green matures to a
soft blue-green with mahogany indumentum below. 10”- 12”, 12”- 15”
var. Blue Ox - new foliage is a deeper blue-green. 8”- 10”
var. Knaphill - handsome elliptically narrow, smooth-textured forest
green leaves above, and cinnamon indumentum beneath, clothe this
compact, mounding plant. 8”- 10”
∗R. campylogynum s. Campylogynum. (China - Yunnan, Tibet 9,000-
14,000 ft.)
Some Shade Dwarf 1’ Early May Rose to White -10°F.
This dwarf growing, compact and spreading plant with small dark green
leaves has a pale green glabrous underside. The widely bell-shaped flowers
are held in clusters of 1-3. 12”- 15”
var. Cremastum - a 2’ grower with dusty-pink bells. 8”- 10”
var. Leucanthum - a plant with white flowers. 10”- 12”
var. Myrtilloides - a dwarf plant with dusty-pink flowers. 4”- 8”
R. camtschaticum s. Camtschaticum (Alaska, Bering Strait, Shores of
Okhotsk Sea to N. Japan)
Sun or Part Shade Dwarf 1’ March Rosy Plum -25°F.
A deciduous plant that bursts forth with new growth in early spring. New
leaves are obovate with hairy margins. It flowers on new growth presenting
rosy-plum colored flowers. (Fall 2014) 4”- 6”
R. ciliatum s. Maddenii s.s. Ciliicalyx. (Bhutan, E. Nepal, Tibet 7,500-
12,000 ft.)
Sun Low 3’ Early April Pink to White +5°F.
A low, somewhat open and rounded growing plant with reddish-brown
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