20188 Rhododendron macabeanum — (HY, hy, Grandia) 5', 10°F, VE-EM, 4-5/4-5. This is a tree rhododendron that will eventually reach 45' height. Foliage is enormous, 18" x 8", smooth, dark green on top and whitish woolly, or light tan indumentum underneath. Large trusses of up to 20, are usually compact but can be rather loose. Flowers, 2-3" long, are light creamy yellow to deep yellow or greenish yellow, purple blotched at the base. OUTSTANDING! 10-15".

Rhododendron macrophyllum — (HY, hy, Pontica) 5', -5°F, M-L, 2-3/2-3. While the rating of this flower is on the low side there are exceptions to this generalization. Nice, full trusses are common among the many variations in color of this species. From pure white to shades of pink to red...they are all possible. This native to the west coast has large leaves, sometimes as large as 10". These plants have purposely not been pinched so that they may attain their typical tall stature as they do in the wild.

NEW 20288 Rhododendron maculiferum — (HY, hy, Maculifera) 5', 5°F, E, 3-4/3-4. White or white blushed rose flowers, blotched very deep black purple, are set in lax trusses. Pale waxy gray or bluish green covers the undersides of smooth matte green foliage, creating a lovely contrast. 30-36"

NEW 20383 Rhododendron magnificum — (HY, hy, Grandia) 5', 10°F, VE-E, 4/4-5/3. The name of this species describes it well, for it is truly magnificent. Leaves are oblong to oblong obovate, extremely large, to 18" x 9", dark matte green. The reverse sides have a thin covering of whitish or light tan indumentum. Rose-purple flowers, to 3" long, tubular-bell-shaped, are held in gigantic, compact trusses of up to 30 flowers. Very close to R. protistum and R. giganteum, differing from both in its leaf shape. Native to Burma-Tibet frontier, 6,000-8,000 ft. 10-15"

20292 Rhododendron makinoi — (HY, hy, Pontica) 3', -10°F, ML, 3-4/4. This unusual plant is most desirable for its superb foliage which is curved downward and backward. The long, narrow bright green leaves are slightly puffy and wrinkled on the tops, indumented underneath with a thick, tawny cover. The delightful, clear light pink flowers, occasionally spotted crimson, are carried in trusses of up to 10. This species has a rounded habit and is slow growing when young. 10-15", 15-21", 21-30"

NEW 20533 Rhododendron mallotum — (HY, hy, Neriiflorum) 3', 10°F, E, 2-3/4. Dark crimson flowers are 2'' tubular-bell-shaped in compact trusses up to 15. Lovely rounded leaves of dark green. A really nice plant. 10-15"

20493 Rhododendron maximum — hy, hy, Pontica) 5', -25°F, L-VL, 3-3. Large oval dark glossy green leaves with broadly bell-shaped i" flowers. They are pink tipped in bud, and can range in color from white through shades of pink and rose, with yellow-green spots. With age it can reach 15'. 6-10", 10-15"

20105 Rhododendron megeratum — (RN, rn, Boothia) 18", 5°F, EM, 3/3-4. Growth habit is compact, mound-like, with very hairy branchlets and purplish, scaling bark. Small leaves are oval and shiny. Flowers, are 1 to 2" long, bell-shaped, creamy or yellow, and set in trusses of up to 3. Rare. 6-10"

20201 Rhododendron moupinense — (RN, rn, Moupinensia) 30", -5°F, VE, 4/3. The finest of the early blooming species. When all else is dreary, its large, showy, snow white flowers with a deep red-purple blotch, begin their annual display. The 1½" oval foliage is shining and polished looking. An added bonus is the bright bronzy red new growth that gives a second display after the flowers are gone. 3-6", 10-15"

Rhododendron mucronatum — See Evergreen Azalea section.

20425 Rhododendron mucronulatum — (RN, rn, Rhodorasta) -20°F, EM, 4/4. This deciduous open and upright shrub is a real winter spirit-lifter, with flowers appearing well ahead of the leaves and long before any other hint of spring has shown. Orchid pink to rose-purple flowers. 10-15"

Rhododendron nakaharai — (TT, tt) 1', -5°F, L-VL, 4/4. The habit for this little evergreen shrub is creeping, making it a good candidate for borders, rock gardens, or ground covers. Another plus is the late flowering, which misses all spring frosts. The leaves are tiny, only ¾" long, the tops a glossy dark green, the reverse paler and a sparse covering of stiff flat hairs covering both sides. Flowers to 1" long are bell- shaped, rose-red to dark brick red, in clusters of 2-3.

Rhododendron occidentale — (PE, pe, Pentathera) 5', 0°F, M, 4/3. A compact shrub that is native to the Pacific coast. Leaves are deciduous, about 4" long, elliptic and a glossy green, changing to yellow, scarlet or rose crimson in the fall. The delightfully fragrant, funnel-shaped flowers are shades of pink and white.

20213 Rhododendron oreotrephes — (RN, rn, Triflora) 5', 0°F, EM, 3/4. This free flowering species has an upright growth habit typical of members of the Subsection Triflora. A striking glaucous cast occurs on the foliage, stem and buds of R. oreotrephes causing it to appear quite distinct amid garden surroundings. Its pendent small green leaves, red stems and chalk yellow buds are subdued in color by the bluish white cast. Rose- lavender flowers are present along the stems and stem tips. 6-10"

20326 Rhododendron ovatum — (AZ, az) 3', 5°F, ML, 3/3. This species is quite rare in cultivation and somewhat tender. An erect, compact shrub, with small, ovate leaves that are bright red or pink when young. The flowers appear as singles coming from several buds at the ends of the branches. They are light pink with purple spots. From Eastern China. 6-10"

20294 Rhododendron pachysanthum — (HY, hy, Maculifera) 30", -5°F, EM-M, 3-4/5. Very beautiful foliage! The leaves are smooth on top, with mature foliage displaying a thick covering of whitish tan indumentum underneath. This plant is similar to R. pseudochrysanthum, and is probably of equal hardiness. It shows all indications of being the R. yakushimanum of the future, possessing the best features of both R. pseudochrysanthum and R. yakushimanum. It also retains the lovely silvery tomentum on the leaf tops longer than R. pseudochrysanthum. Wide, bell shaped flowers are light pink to white, heavily spotted, and are set in trusses of 10-20 flowers. 10-15", 21-30"

20220 Rhododendron pemakoense — (RN, rn, Uniflora) 1', 0°F, VE-E, 3/4. Heavy flowering orchid pink. Cute plant. It is very easily grown and is free flowering. 6-10"

20205 Rhododendron pendulum — (RN, rn, Edgeworthia) 2', 10°F, E-M, 3/5. This straggling, open growing shrub has attractive, densely wooly new growth. Leaves are small and oblong, wrinkled on top, densely covered with fawn or brown cottony hairs. Flowers, in clusters of 2-3, are flat, saucer-shaped, white in color, tinged yellow inside, occasionally touched with pink. VERY RARE. 6-10"

Rhododendron ponticum — (HY, hy, Pontica) 4', -15°F, L, 2-4/4. This shrub has an upright and open habit, with leaves up to 9" long, dark glossy green on the top sides and paler on the reverse. Widely funnel-shaped flowers to 2" long, are deep reddish purple to white, or purple tinged pink, held in trusses of 10-15.

20004 Rhododendron pronum — (HY, hy, Taliensia) 1', -10°F, EM-M, 3/4-5. This interesting dwarf shrub is slow growing and prostrate. It has distinctively gnarled, rooting branchlets, and leaf bud scales that persist for many years. Bell-shaped flowers are creamy yellow and generously spotted deep crimson. 6-10"

20005 Rhododendron proteoides — (HY, hy, Taliensia) 1', -10°F, EM, 3/5. This is a rare and unusual species; a slow growing, tightly compact and spreading shrub, with typically outstanding R. taliense foliage. Thick, woolly red-brown indumentum on the underside of nicely shaped, rich green leaves contributes much to the appeal of this plant. Bell-shaped flowers are pink in the bud, opening to creamy white or white blushed rose, generously spotted crimson. Difficult to propagate. The connoisseur/collector’s ultimate goal.

20298 Rhododendron pseudochrysanthum — (HY, hy, Maculifera) 1-3',-10°F, EM, 3/4-5. This dense, compact shrub has glossy dark green leaves, paler on the undersides, slightly hairy on both sides. Dark pink buds open to 2" long, bell-shaped flowers, pale pink or white, occasionally displaying rose lines outside and crimson spotting inside. They are held in trusses of 9-20. 6-10"

20233 Rhododendron racemosum — (RN, rn, Scabrifolia) 2-5', -5°F, E-EM, 4/3. Find a sunny spot for this pert plant and you will discover yourself smiling at it every season of the year. It will grow many erect red stems lined with glossy round leaves. Pink flower buds occur along upper portions of the stem and in multiples at stem tips. Fairly early in the flowering season, R. racemosum will appear as a bundle of clear pink plumes. 6-10"

20259 Rhododendron rex — (RN, rn, Falconera) 6', 5°F, EM, 3/4. Oblong oval or oblong elliptic leaves, up to 18 x 6", are shiny dark green above, with a gray, buff or brown indumentum underneath. Pale pink, rose, or white flowers, blotched and spotted crimson, are tubular, bell shaped, up to 2½" long. Held in large trusses of up to 30. A beautiful, elegant rhododendron. 10-15", 15-21"

NEW 20238 Rhododendron rigidum — (RN, rn, Triflora) 5', -5°F, EM, 4/3. This very beautiful plant, when in full flower, appears as a cloud of smoky pink. Wide, funnel- shaped flowers are white to pink or intense rosy lavender and occasionally spotted red. 10-15"

20241 Rhododendron roxieanum — (HY, hy, Taliensia) 3', -10°F, EM, 3/5. The following are the extreme rarities of the Taliensia series that every collector wants. The foliage is long and narrow, deep green and heavily covered with cinnamon indumentum. When the foliage is new, the tomentum on the top is white and it gradually turns into shades of tan. The flowers are white with a touch of pink on the buds. 10-15"

NEW 20390 Rhododendron rubiginosum — (HY, hy, Heliolepida) 6', -5°F, E-EM, 3/3. Upright shrub with lance shaped leaves to 4" long are dull dark green above, brownish green underneath, and scaly on both sides. Widely funnel-shaped flowers, to 1½" long, are pink to pinkish purple, or light to deep mauve, with crimson spotting, and held in trusses of 4 to 8. 10-15"

20143 Rhododendron russatum — (Rn, rn, Lapponica) 3', -15°F, EM, 4/3. Upright and open, with scaly new growth. Leaves are oval, dark green, and densely covered with rusty scales on the undersides. Royal purple to plum crimson flowers have yellow stamens. This is a desirable selection. 6-10"

20112 Rhododendron saluenense — (RN, rn, Saluenensia) 18", -5°F, EM, 4/3-4. This appealing little shrub forms a small mound of many ascending stems which curve to form layers of horizontal branches. Small rounded leaves, 1-2" long, are aromatic, glossy and hairy along leaf margins, becoming shaded purple in winter. Flowers, 1-2" across, open flat, the color rosy purple to deep purplish crimson, spotted crimson, and carried in trusses of 2-5. Very variable in growth habit. 6-10"

20258 Rhododendron schlippenbachii — (PE, sc) 4', -25°F, E-EM, 4/3-4. A deciduous species loved by all who see it. It’s upright and open with thinly textured leaves in whorls of 5 at each stem tip and it shows off its starlike, delicate pink flowers either just before or along with the leaves. The distinctive, thin foliage will not tolerate excessive sun exposure. The obovate dark green leaves turn crimson, orange or yellow in autumn. For added interest, flowers sometimes are tinged with reddish spots. 10-15"

20303 Rhododendron sinogrande — (HY, hy, Grandia) 5', 10°F, E, 4/4. As the name suggests, this is truly a "grand" plant. It is the largest leaved of all rhododendrons, magnificent to behold. Mature leaves, up to 30" long, are glossy green on the tops, layered thinly with silver-white fawn indumentum underneath. The young growth is beautiful silvery gray. Generously proportioned bell-shaped flowers, creamy white to pale yellow, blotched crimson, are held in ball trusses of up to 20 or more. A marvelous inclusion in any landscape. 10-15", 15-21"

20266 Rhododendron smirnowii — (HY, hy, Pontica) 3', -15°F, ML, 3/3-4. This is an upright open growing shrub. The new growth is covered with a lovely white felt-like tomentum. Leaves, to 6" long, oblong or lance shaped, the edges bent downward, are smooth dark green on top, indumented with a tawny colored, thick, woolly cover underneath. Frilled funnel, bell-shaped flowers, to almost 2" long, are pale to deep rosy purple, and are carried in loose trusses of 10-12. Nice! 10-15"

20158 Rhododendron sphaeroblastum — (HY, hy, Taliensia) 4', -5°F, EM, 3/4. Young growth on this plant is smooth and hairless, either greenish or purple. Leaves are oval or oblong oval, hairless olive green on top, with a heavy, woolly, rust indumentum underneath. Emerging from buds that have a rosy blush, funnel, bell-shaped flowers are white, spotted crimson, in trusses up to 12. 10-15", 15-21"

20508 Rhododendron spinuliferum — (RN, rn, Scabrifolia) 4', 5°F, EM, 3-4/4. This shrub has a loose willowy habit with bristly, softly hairy stems and to 3" long foliage. Narrowly tubilar flowers, to 1" long of scarlet crimson to brick red with distinctive protruding stamens and anthers are placed up the stems between the leaf clusters. Almost like clusters of fire crackers! 10-15"

NEW 20168 Rhododendron stenopetalum — Syn. R. macrosephalum 'Linearifolium'. (TT, tt) 2', 5°F, EM, 4/4. If you want something different, try this. The leaves are up to 3" long and ½" wide. The flowers are pink and have very interesting narrow linear petals like the foliage. 6-10", 10-15"

20270 Rhododendron strigillosum — (HY, hy, Maculifera) 4', 5°F, E, 5/4. Splashing deep blood red flowers appear early in the spring on top of long slender leaves which are heavily coated with stiff bristles. Midrib on the underside of the leaf is heavily coated with indumentum. The bristles on the new foliage are red, a display all its own. Most beautiful. 10-15", 30-36"

NEW 20160 Rhododendron taliense — (HY, hy, Taliensia) 5', -5°F, EM, 3/3. A warm coat of buff colored indumentum covers the undersides of this lovely foliage. Flowers are creamy yellow or cream blushed rose with intense crimson markings. One of the most beautiful species to be found. 10-15"

20426 Rhododendron temenium — (HY, hy, Neriiflora) 18", -5°F, EM-M, 3/2-4/-. Growth habit is very compact in this highly variable species. Leaves to 3", are oblong to oblong-oval, usually hairless on both sides. Flowers to 1-2", are tubular-bell-shaped and are of great substance. Colors range from red or scarlet to deep crimson or purple crimson. 6-10"

20226 Rhododendron thayerianum — (RN, rn, Argyophylla) 5', 0°F, VL, 3/3-4. Compact upright growth habit with leaves clustered closely around trusses. Large leaves are oblong, glabrous light green on top, the reverse with very thin buff-colored indumentum. Flowers are funnel and bell-shaped, white tinged pink or pink, held in compact trusses from 10-20. A beautiful rhododendron, especially valued for its late flowering. 10-15", 15-21"

NEW 20276 Rhododendron thomsonii — (HY, hy, Thomsonia) 5', 5°F, EM, 3-4/3. Blood red flowers top the round deep green leaves. Peeling red bark on older plants is attractive. From Sikkim. 10-15"

Rhododendron traillianum — (HY, hy, Taliensia) 5', -5°F, EM, 3/3-4. Mature leaves may reach 7" are oblong and dark green on the top with a fawn indumentum on the underside. Flowers are bell-shaped and are carried in trusses of 15. The blooms range in color from rose to light or dark purple, and have a paler blotch.

NEW 20277 Rhododendron trichanthum — (RN, rn, Triflora) 4', 0°F, L, 2-3/3. This species is one of the latest flowering members of the subsection Triflora. Blue-purple flowers are found amid soft bristly covered leaves and stems. R. trichanthum was once known as R. villosum. 10-15"

20371 Rhododendron tsariense — (HY, hy, Lanata) 3', 0°F, E, 3/5. This rhododendron is grown for it tremendous cinnamon indumentum. If this never flowered, it should be grown. Its flower are pale pink to white flushed pink and are spotted with crimson. Difficult to propagate, and almost impossible to obtain, it is regal species for the connoisseur. 3-6", 6-10"

NEW 20474 Rhododendron uvarifolium var uvarifolium — (HY, hy, Fulva) 4', 5°F, E, 3/3-4. Treelike growth habit with oblong dark green leaves to 10" and a light indumentum below. Bell-shaped flowers from white to white-flushed-rose or pale rose that are sometimes blotched with crimson and held in tight rounded trusses. 10-15"

20366 Rhododendron wallichii — (HY, hy, Campanulata) 4', -10°F, EM, 2-3/3. Very closely related to R. campanulatum except with a conspicuous absence of indumentum. The flowers are a soft lilac with rose spotting. 10-15"

20280 Rhododendron wasonii — (HY, hy, Taliensia) 4', -5°F, EM, 3/3-4. Young foliage buds on this shrub are densely clothed on top with a pale grayish buff tomentum. Leaves, to 4" long, are oval-shaped, dark shiny green and almost hairless on top, layered with thick dark brown or rust colored indumentum underneath. Carried in loose trusses of 6-10, the bell-shaped flowers to 1½" long range from white to creamy white, pink, rose, or yellow and sometimes spotted crimson. 10-15"

20283 Rhododendron williamsianum — (HY, hy, Williamsia) 18", -5°F, EM, 3/4. Regarded as one of the loveliest in the genus, grows in a perfectly rounded shape, and has delicate, dainty little bell-shaped flowers hanging like fairy lanterns amidst the dense foliage. This dwarf species is compact, tight and low spreading, not usual for this series. New growth is a lively bronze. Leaves, vary from ½" to 2" in length, are brilliant green on top and a bluish green cast underneath. Blooming in various shades of pink, the flowers are up to 2" long and held in loose trusses of 2-3. 10-15"

20281 Rhododendron wiltonii — (HY, hy, Taliensia) 3', -5°F, EM, 3/4. Young growth on this shrub is clothed with greenish white felt. Leaves, to 5" long, are oblong, lance-shaped or oblong obovate; the tops shiny, wrinkled, and hairless; the undersides are indumented with fawn or brown. Bell-shaped flowers, to 1½" long, are white or white blushed pink, spotted and blotched crimson, and held in trusses of up to 10. 6-10", 10-15"

20117 Rhododendron yungningense — (RN, rn, Lapponica) 2', -15°F, EM, 3/3. A dwarf shrub, with an open, upright habit and densely scaled new growth. Tiny leaves are oblong lance-shaped and rust colored on the undersides. Funnel-shaped flowers range in color from pale rose-purple to deep purple or dark purplish blue and appear either alone or in pairs. 6-10", 15-21"

20269 Rhododendron yunnanense — (RN, rn, Triflora) 6’, 0°F, EM-M, 4/2-3/3-4. This extremely variable species flowers freely both at the ends and amongst the 4" oblanceolate to lanceolate bright green scaly leaves in trusses of 3-5. The 1½" funnel shaped flowers range from white to pink and rosy lavendar, sometimes even spotted or blotched crimson. The plant’s open and upright habit works well with the wonderful flower display. 10-15"

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04/15/2009