It is a very large genus with about 1200 described species. It is related to Ponticum and Catawbiense. Linda Crampton (author) from British Columbia, Canada on May 28, 2013: Thank you very much, drbj. Rhododendron californicum Hook. Distribution: The Pacific Rhododendron is found west of the Cascades from southern British Columbia to Northern California. R. macrophyllum, the Pacific Rhododendron, is a vigorous, upright, elepidote rhododendron that is found from Northern California to British Columbia. Some research is needed to find a suitable variety before purchasing a plant. collect. Pacific Rhododendron Society Quick Facts. It tolerates dry, but prefers damp soil, and in Washington is found in association with Western red cedar, Western hemlock, and Douglas fir. : part shade - shade Plant description: It grows 15-20' on average. It burns the mouth of an animal or human that eats the leaves, which limits its danger. The genus Rhododendron is divided into eight subgroups, or subgenera. The flowers are still present in June and sometimes even later in the summer. The biggest and most vigorous bush is recovering nicely. Here in the Pacific Northwest region of North America, April and May are prime time for the blossoms to open. It is a very large genus with about 1200 described species. Pacific Rhododendron Care – How To Grow A Pacific Rhododendron - Ulrike Blog. The genus is large and extremely diverse, comprising about 850 species. Heavy pruning of a bush requires more care. It may have merged with another organization or ceased operations. Thank you for the visit and the comment, Ingenira! Ornamental rhododendrons such as the ones shown in most of my photos have large, oval leaves with a glossy dark or medium green upper surface and a dull, pale green lower surface. Plant Group: Shrubs. Programs + Results. Rhododendrons like a semi-shaded area with dappled sunlight. Light trimming includes maintenance procedures and perhaps the removal of the outer sections of the biggest branches. Height: 25 ft. The flower buds on the rhododendron bushes open, producing beautiful, showy blossoms and a gorgeous display of color. … The third bush is in trouble. The Facts Pacific Rhododendron can be found in western Washington in moist woods from sea level to moderate elevations in the mountains. The plant generally has pink flowers and is the state flower of Washington. All azaleas are rhododendrons, but not all rhododendrons are azaleas. The plant has shallow and fibrous roots that may be widespread. In 65 BCE, King Mithridates Vl of Pontus fought Pompey's army with mad honey. If more than one of these possibilities could apply to your plant, it might be helpful to consult a local expert who can examine the plant or samples from it and ask you relevant questions. You might find an expert at a garden store or plant nursery or at an agriculture extension department of a university or college. Some types grow as epiphytes, or "air-plants" with aerial roots. Azaleas are one of the most popular landscape shrubs grown in zones seven to nine. The Rhododendron Species Foundation in Federal Way, Washington, which is dedicated to the conservation, public display, and distribution of Rhododendron species has about 600 species in their display gardens along with many of the over 28,000 cultivated varieties. Because of their shallow roots, little or no cultivation should be done around rhododendrons. Tacoma, WA Summary . Thank you for all this information on the Rhododendron,especially the poison which I was unaware of. Rhododendron, meaning “red tree,” refers to the red flowers and woody growth of some species, but rhododendrons range in habit from evergreen to deciduous and from low-growing ground covers to tall trees. They include drought, pests, viral infections and chemical changes in the soil. Most are found in China, Japan and neighboring countries; tropical species are found from Southeast Asia to New Guinea and Northern Australia. It is the state flower of Washington. Rhododendron is often confused with: Edgeworthia chrysantha. In fact, the latter is how the Pacific rhododendron became Washington’s state flower. R. macrophyllum. Gail Meyers from Johnson County, Kansas on June 05, 2013: These are beautiful. There are lots of fun facts about rhododendron. In the Landscape: Rhododendrons have long been a favorite of landscapers in the Pacific Northwest. Really interesting article and did not know azaleas were related but now it makes logical sense. The leaves are 6 inches long and are rather flat, evergreen and smooth on the underside. The state flower of Washington is the Pacific rhododendron, R. macrophyllum, which means “rose tree with large leaves.” Rhododendron macrophyllum grows in the wild from British Columbia, Canada to central coastal California.Its flowers are typically various shades of pink and mauve, with the occasional white. They belong to the family Ericaceae, which is often referred to as the heather family. Great hub! Some rhododendrons have delicately-colored blossoms while other have vibrant colors. Plant type Coniferous or Broadleaf Evergreen Shrub; Native or non-native Native; Sun & shade levels Full Sun; Part Shade; Shade; Soil conditions Dry; Moist & Well-Drained; Upland/wetland ratings UPL-Very dry, found in upland ; Yearly Height, Width 1-2 ft., 1-2 ft. Browse 17,350 rhododendron stock photos and images available, or search for rhododendron garden or pacific rhododendron to find more great stock photos and pictures. Rhododendron. In that narrow belt along the Pacific slope running from Vancouver and Victoria, BC, to San Francisco, the winters are tempered by warm waters, the air is moist the year round, there is very little extreme summer heat and the soil is naturally acid. Good luck with your rhodo! Wounding and dipping in an IBA hormone aids rooting of cuttings. Artikel von dgardening.deutschideen.com. Quick Jumps . Leaf: Alternate, simple, persistent, elliptical to oblong, 3 to 6 inches long, thick and leathery, dark green and smooth above and paler below (sometimes rusty), margins entire and often slightly revolute. Some of their thick, woody stems were sawn off, and the bushes were considerably reduced in size. Originally discovered by Charles L’ecluse, the Rhododendron has established quite a reputation for itself throughout the centuries after its discovery by the Flemish botanist. Thanks, tipoague! Coast Rhododendron leaves are alternate, whorled, leathery, with long petioles. Hairy Manzanita, Arctostaphylos columbiana, Western Maidenhair Fern, Adiantum aleuticum. In May, when our northwest native Rhododendron macrophyllum is in bloom, I love driving through Whidbey Island or around the Kitsap and Olympic Peninsulas, spotting the vast amount of this native species in full regalia. They surround the style, which is longer than the stamens and is part of the female reproductive structure. Dieses Stockfoto: Pacific Rhododendron (Rhododendron macrophyllum), Suche Creek Trail, H.J. The king's army then attacked and killed them. The first species available for garden use, in the mid-1600s, was R. hirsutum, the hairy alpine rose, which may grow as high as 1 metre (3 feet). Of distinguishing the two plants is to look at the flowers are bright red, Arctostaphylos columbiana, Western Fern... Florist flowers, fun flower facts, Rhododendron, the coast Rhododendron in south Francisco shape... Leathery leaves of Pacific Rhododendron are native to Europe, Asia, America... 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