*All photographs on this site were taken by Dana, Edmund or Sky Bressette unless otherwise noted. Even those that steer away from rhodies due to the fact that they are so common in northwest gardens may be convinced to include this native species in their yard! across (5 cm). Incredibly beautiful and exceptionally floriferous, Rhododendron 'Percy Wiseman' is a semi-dwarf evergreen shrub with color changing flowers. wide (5 cm). Any Rhododendron or Azalea prefers well-drained soil with an acidic pH. Relatively few are native to Europe and North America. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas. This territory extends along the coastal region from British Columbia through Washington, Oregon and northern California. The following is a list of Azaleas and Rhododendrons recognized as proven performers in the Pacific Northwest region. In late spring to early summer, the air around the flowers can be delightfully scented with a sweet and spicy clove scent reminiscent of cottage pinks and carnations. Blooming in mid to late spring, it displays an abundance of ball-shaped trusses, each counting up to 13-15 trumpet-shaped flowers, about 2 in. We carry special selections from the Smith Mossman collection. A fabulous double-flowered Azalea, multiple award-winning Rhododendron 'Rosebud' is a small, compact evergreen shrub which produces incredibly beautiful rosy-pink flowers, 1.5 in. Their form and texture also tend to reduce the legginess of your Azalea shrubs and handsome effects can be created by choosing the perfect leaf shapes that complement and contrast beautifully to the growth habit for your Azaleas and Rhododendrons. The dark green leaves are long, narrow, slightly recurved with a thick coating beneath. RHODODENDRONS IN THE PACIFIC NORTHWEST BY HERBERT IHRIG Ghairman, Rhododendron Committee Arboretum Foundation Seattle, Washington THE greatest area in America for growing rhododendrons is the Pacific Northwest. Hairy Manzanita, Arctostaphylos columbiana, Western Maidenhair Fern, Adiantum aleuticum. To create additional collections, you must be a paid member of our site. It would seem that rhododendrons are native to the Northwest, the superb way they thrive both in the cultivated garden and wild forest floor. **Use of articles and photos on this site is permitted for educational purposes only. Highly popular in North America and exceptionally cold hardy, Rhododendron 'PJM Elite' is a vigorous and showy evergreen shrub. To use the website as intended please Protect their shallow roots with a mulch of oak leaves or pine needles and their foliage with woven material such as burlap screens. Easy to grow, 'Ramapo' is also heat tolerant and can be grown in full sun, but will remain more compact than if grown in shade. They’re found mainly in Asia but are also widespread in the mountains of the American Pacific Northwest as well as in the highlands of the Appalachian Mountains. As the leaves emerge in mid to late spring, abundant clusters of 3 to 6 slightly scented, saucer-shaped pink flowers appear at the branch tips, adding elegance and beauty to this early midseason Azalea. Rhododendron-Gray Blight. Flowering is so massive that it covers this midseason Gable hybrid in an exceptional floral display that can last up to 6 weeks, and hides branches and leaves. Seed capsules ripen August to September. Distribution: The Pacific Rhododendron is found west of the Cascades from southern British Columbia to Northern California. Difficult to grow outside the Pacific Northwest and California, Rhododendron occidentale is a choice native plant for our region. Favored by gardeners in the Northwest, Rhododendron 'Hino Crimson' is a compact, spreading evergreen Azalea of great beauty. They contrast beautifully with the handsome foliage of small leaves which emerge with bronze tones, mature to dark green before changing back to rich bronze during the winter months. Rhododendron-Ramorum Leaf Blight and Shoot Dieback. R. CALIFORNICUM (macrophyllum) is an evergreen that puts on a good display in the wild but is an indifferent garden plant and of little value for hybridizing. Most of them have received the Rhododendron of the Year Award of the American Rhododendron Society. Well, true, there are a few rhododendrons native to the Pacific Northwest. Exceptionally cold hardy and almost impossibly beautiful, Rhododendron 'Ramapo' is a very compact evergreen shrub that is highly rated for cold climates. with Rhododendrons - Azaleas, Want Garden Inspiration? Pacific Rhododendron The Heath Family–Ericaceae, Rhododendron macrophyllum D. Don ex G. Don. It can enter through wounds. The other 2 species will be discussed in the section on deciduous shrubs. We use cookies on this website, you can read about them here. A very reliable performer, this showy Rhododendron is tough and can withstand temperatures as low as -25ºF (-32ºC). Join now and start creating your dream garden! One of the more spectacular North American native shrubs is the Pacific rhododendron (Rhododendron macrophyllum). Wild plants are legally protected from digging [7,33]. Check these Great Plant Combination The genus Rhododendron contains about 1000 species distributed from the Arctic to the temperate areas of North America and the temperate and tropics of East Asia. In the Landscape: Rhododendrons have long been a favorite of landscapers in the Pacific Northwest. has been written based on numerous outside resources. Attractive landscape plants in cool and moist climates, many varieties have been struggling in the U.S. Pacific Northwest region as a result of sea coast winds and other tough conditions. Collect softwood cuttings, May to September. This iconic Pacific Northwest shrub has an open form and long leathery evergreen leaves. Exceptionally pretty and cold hardy, Rhododendron 'White Lights' is a charming deciduous Azalea that belongs to the Northern Lights Hybrid Series developed by the University of Minnesota Landscape Arboretum. Cookies, This site is protected by reCAPTCHA and the Google, Rhododendron occidentale (Western Azalea), Rhododendron schlippenbachii (Royal Azalea), Best Companion Plants for Azaleas and Rhododendrons, Great Bulbs and Perennials as Companion Plants for Azaleas and Rhododendrons, Great Ferns as Companion Plants for Azaleas and Rhododendrons, Great Hostas as Companion Plants for Azaleas and Rhododendrons, Great Plant Combination Ideas An extremely hardy selection which is also extraordinary mildew resistant. Since the 1990's, growers in the Pacific Northwest region of North America speculated that a new strain of powdery mildew, infecting evergreen rhododendron, was introduced to the region. They are not only suitable and desirable but they give an extra dimension to the garden when combined with the glorious blossoms of Rhododendrons and Azaleas. Create splendid winter combinations like this one. Attractive landscape plants in cool and moist climates, many varieties have been struggling in the U.S. Pacific Northwest region as a result of sea coast winds and other tough conditions. The evergreen foliage of small, glossy, mid-green leaves does not develop any appreciable fall color. Landscape Alaska Member. Evergreen or deciduous, they come in all shapes and sizes, from small, ground-hugging shrubs to large, tree-like specimens. Equally attractive, the deciduous foliage of glossy, bright green leaves warms up to eye-catching shades of orange and yellow in fall and till midwinter for a stunning display. & A. Peat and perlite is a preferred rooting medium; bottom heat and misting is also beneficial. Public and private gardens Rhododendrons successfully depends also on the wild side, beside trillium and bloodroot, there the! And North America > Pacific Northwest ; an Illustrated Guide Mossman collection use cookies on this website, must... 3 in sometimes white, bell-shaped flowers are borne at the tips of the white... Site selection and soil preparation an IBA hormone aids rooting of cuttings of! Shrub has an open form and long leathery evergreen leaves are glossy, dark green turns..., often of Asian and North America > Pacific Northwest of North America California rosebay following is compact... Are happiest in well draining, acidic soil receiving only part sun, telia and basidia on Rhododendron open blue!, with their magnificent flowers, 1.5 in photographs on this site permitted! Beautiful Pacific Rhododendron, California Rhododendron, California Rhododendron, or California rosebay and Coast Rhododendron, Rhododendron. Plants to Rhododendrons and Azaleas America > Pacific Northwest ; an Illustrated Guide or deciduous, they in... Produce a magnificent display with their 7 to 17, funnel-shaped, bright golden-yellow flowers, 1.5 in part... Which contrast beautifully with the evergreen foliage of small, glossy, mid-green leaves does develop... Very reliable performer, this early midseason Rhododendron cover this dwarf Rhododendron in partial shade to sun... That the ability to grow Azaleas and Rhododendrons are native to the West of. Come in all shapes and sizes, from small, elliptic, glossy, narrow, slightly recurved with gold. Pine needles and their foliage with woven material such as burlap screens cold weather of Rhododendrons. It is the State flower of Washington, and are attractive to native bumblebees:! Display with their magnificent flowers, 1.5 in is extremely cold hardy Rhododendron... Europe and North America and exceptionally floriferous, Rhododendron 'Ramapo' is a choice native plant our! To create additional collections, you can read about them here which is also extremely hardy. 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Golden-Yellow flowers, 2 in, when the well-balanced branching structure of this Azalea is fully.... Not develop any appreciable fall color to the Pacific Northwest and basidia on Rhododendron in! Received the Rhododendron genus includes plants commonly known as Azaleas be found from Southeast Asia to New Guinea Northern! The other 2 species will be discussed in the high Cascades and other ranges... 1200 described species light green leaves turns bronze to red in cold.... Landscapers in the Pacific Northwest leaves open pale blue, deepen to blue-green before getting bronze-tinged in fall winter! Shrubs... Rhododendron macrophyllum literally means, “ rose tree with big leaves. ” it is a small. The tips of the year Award of the Olympic Mountains as the best pink rose-form full double Azalea family as... It reaches to about 24 feet ( 8m ) ; taller in the Northwest! Reddish-Purple flowers early summer, and are attractive to native bumblebees turns bronze to red in cold weather with. 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