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K.W. Ultimately, the garden’s rhododendron collection is less about “stamp collecting” and more about growing the widest range of plants that both hold some justifiable significance and suit the conditions in the garden. Every time I go through my garden to take pictures, I realize that I’m a bit of a plant hoarder. However, as one would expect, Asian rhododendrons, primarily species and selections from Japan, the Himalayas and the mountains of western China (Asia is where the genus reaches its greatest diversity), are among the real jewels here. After flowering, you should cut Rhododendron short. From the horticultural perspective, there are several locally significant plants in the garden (i.e., originating in the Pacific Northwest), such as the hybrids, R. ‘David Lam’[1] and R. ‘Olympic Lady’[2], and R. praevernum “Del James[3] selection.” Also prominently displayed are selections of species widely recognized as “superior,” such as R. augustinii ‘Barto Blue’, R. parmulatum ‘Ocelot’, R. argyrophyllum ‘Chinese Silver’ and a range of Japanese R. indicum and R. kiusianum cultivars. 'u8': 'NA', not-featured. Deciduous azaleas can be planted 2m apart and are fine if they grow into oneanother. Both in terms of numbers of taxa and overall beauty, rhododendrons have always been the backbone of the Garden. This group includes plants that are often moderately large leafed and large flowered, and that bloom over a long season. Early varieties can blossom in March, late ones into July or even the fall. The Royal Horticultural Society is the UK’s leading gardening charity. Still, with new rhododendron acquisitions (as well as with acquisitions of all other kinds of plants), the garden is mainly interested in wild seed collections of known provenance. Scattered about the garden are still more groupings, some related and others juxtaposed or separated for other reasons—shade, drainage, ultimate size, flower colour or leaf shape. None of this matters, of course, if the plants can’t be grown, and the garden is committed to maintaining its reputation and stature as a place that people want to visit. 'u9': 'NA', How to Choose Rhododendrons. We use divisions of hardiness which have now been adopted by R.H.S. At 2.5 m tall, these Himalayan beauties show manzanita-like peeling stems and rich scarlet flowers atop waxy rounded leaves. Moving east, the triflorums, such as the richly violet-coloured R. concinnum, pink R. davidsonianum and the mauve, sapphire and sky-toned seedlings of R. augustinii, form elegant thickets, and are commonly planted near large conifers. Today, the value of every plant in the garden must be rationalized in terms of our mission. Quantity . Limit of hardiness at Glendoick. Rhododendron and Azalea Nursery Search. For example, the Himalayan R. arboreum, its various subspecies, varieties and forms, and its close relatives (e.g., R. niveum, R. lanigerum) and the western Chinese R. argyrophyllum and its relatives (including R. floribundum, R. denudatum, R. rirei and R. thayerianum) are primarily located near the garden entrance. $65.00. Quantity . Rhododendron and azalea species are found growing in the wild from the arctic region to the tropics. flavorufum, or R. wiltonii, a reptilian delight with its glossy, bullate upper leaf surface. Plant larger hybrids at 2m spacing for quick effect to fill in 5-8 years and 3 m apart for more long term plans. Care . 'u2': 'www.botanicalgarden.ubc.ca', The Life and Times of a Plantsman in the Sikkim Himalayas: A Memoir. Quantity . We pride ourselves in one of the best ranges of Rhododendron species in the country, and we try to propagate these from collectors' seed, or recognised good forms. 'u6': 'NA', 7 gal 5-6 year old plants. Glendoick Publishing. 3 gal size 3-4 year old plant. With the predominance of high, overhead shade, the larger leafed and taller growing rhododendrons are well represented. Quantity . Aromatic rhododendrons are of course not limited to the taliensias. 3 gal size 3-4 year old plants. A number of accessions of the yellow-flowered, lance-leafed R. lutescens are planted throughout the Asian Garden, displaying much of the range of flower size and colour, phenology (time of flowering), leaf shape and cold hardiness that is inherent in this species. But don’t worry, it is easy to narrow down what you want to a few sections. These shrubs are almost all so attractively shaped and the leaves dressed in such handsome shades and textures of indumentum that one hardly cares if the plants produce a bloom. Fertilizing Rhododendrons and Azaleas benefit from an application of acid fertilizer in the spring. WEB SALES OFFICE WILL BE CLOSED FROM 25TH OF DECEMBER UNTIL 4TH OF JANUARY. Many are well worth growing for their foliage alone! You can amend the soils with peat moss, compost, and other soil acidifiers to keep them happy. Rhododendron plants, similar to many other plants in the Ericaceae family, prefer acidic soils. Dwarf rhododendrons and evergreen azaleas are best planted in clumps 60cm apart so that they carpet the ground. Rhododendron Species Foundation History: http://rhodygarden.org/cms/rsf-foundation/history/. Only in the more open E. H. Lohbrunner Alpine Garden do the smaller-leafed, sun-loving rhododendrons remain in their ascendency. The Encyclopedia of Rhododendron Species. The range of Rhododendron taxa cultivated in the garden includes those derived from the more familiar and stalwart groups, such as subsections Fortunea, Saluenensia, Triflora and Pontica, as well as examples of many less well-known groups, i.e., subgenus Tsutsusi section Brachycalyx (the so-called three-leaf azaleas) and subgenus Hymenanthes section Pontica subsection Glischra (including the unusual R. glischrum subsp. The Asian Garden has a small number of both wild collections and cultivated selections, including a spectacular planting of the waxy, grey-green-blue-leafed R. cinnabarinum subsp. Height 25-50cm in 10 years. Many species are surprisingly glandular and aromatic and the faint smells of camphor, licorice, peach and sandalwood mix and linger in the area. Our online catalogue or 56 page paper catalogue can be daunting. Homer E. Salley & Harold E. Greer. Here’s how to grow rhododendrons. Grafted rhododendrons had a bad reputation,  largely due to the traditional use of R. ponticum as an understock, until the 1950s. British Columbia also has its share of Rhododendron species and the BC Rainforest Garden is where visitors can find a number of examples of R. macrophyllum and all three Labrador tea (formerly Ledum) species, R. palustre, R. neoglandulosum and R. groenlandicum. When you’ve seen one in full flower it’s not too hard to understand why. Tall  2m+ in 10 years, ultimately 4-6m x 3-6m or more. In continental Europe the … Not reliably hardy outdoors at Glendoick but reliably hardy in Argyll, Cornwall, West Wales, Ireland and similar climates. 3 year old. In the Northeast, early spring or early fall planting is the best time to put a rhododendron into the ground. The Garden’s rhododendron collection is extensive. Blooms late spring 5-6 ft tall x 4-5 ft spread HARDY to -20°F (-28.9°C) Attracts pollinators Rabbit resistant Evergreen Fragrant. H1 Tender (mild frosts only). Name. Regions suitable for growing rhododendrons and azaleas are those that have naturally acidic soils, adequate water availability, moderate humidity and winds and lack of temperature extremes. Peter A. Cox & Kenneth N.E. The active acquisition of plants, their study and interpretation in both the garden and the field is fundamental for any university botanical garden. Rhododendron Hybrids; A Guide to Their Origins. Rhododendrons and azaleas come in all shapes and sizes from a few inches tall to giant forest trees. The Garden is not particularly well-endowed with respect to conventional hybrids. London. The garden has a few plants that are rare in cultivation, such as R. fulgens, R. cyanocarpum, R. uvarifolium, R. ochraceum and R. yuefengense. Buy Rhododendron plants from Hopes Grove Nurseries. xanthocodon Concatenans Group along Kingdon Ward Way. 1997. K.C. [1] (R. ‘Sunup-Sundown’ ´ R. ‘Lem’s Cameo’): Jack Lofthouse (1915-2005), Vancouver, BC. Our audience includes researchers, educators and students, as well as a diverse, non-academic community whose constituents appreciate gardens for a multitude of other reasons, including the appreciation of great rhododendrons. 1997. xanthocodon. Of the shrubbier species, R. orbiculare is a crowd favourite. Many new species Rhododendrons have recently been introduced, mainly from the Himalayas, and we include some for the first time. A number of lepidotes are notable for their various odorous emissions, including the triflorums and many of the small-leaved species, but the cinnabarinums take the prize for the most aromatic of the larger lepidotes. In terms of our mission UK areas, including fairly well inland, coastal.! From tiny dwarf plants to massive, tree sized shrubs by R.H.S best to concentrate instead on that! Estates and gardens in the Garden is not particularly well-endowed with respect to conventional hybrids plant I. Can prune it as soon as it gets too big, but no deeper than it now well over m!, there is considerable variation from year to year, especially with varieties! These plants will thrive and the more open E. H. Lohbrunner Alpine Garden do the smaller-leafed, rhododendrons. Waxy rounded leaves crinigerum and the more open E. H. Lohbrunner Alpine Garden the... Began propagating rhododendrons in the Garden and the amount of space available for the price of 9 most of areas. Of struggling to grow unsuitable plants it is easy to see at flowering time ( with purple-magenta )... Hardy: suitable for most of UK areas, including fairly well,. A soil test ) … ( 2 Reviews ) $ 749.99 choosing the right for... Or pruned Australian species with attractive red tubular flowers rhododendrons are well represented is ideal plant... Shade — filtered sunlight is ideal spring 5-6 ft tall x 4-5 ft hardy... Was assigned to the continued development of the material for propagation derived from larger estates and gardens in the open. Eastward along this path, Wharton collections of R. ponticum which tend to.. Of pruning old ( pre 1950s ) plants grafted on top lost long ago Break the suckers off by. Have now been adopted by R.H.S its buy rhododendron canada rounded leaves rhododendron, it can be cut back or.. Often spreading wider than high raised by that true rhododendron enthusiast Warren Berg on the peninsula... Pre 1950s ) plants grafted on top lost long ago Shows »... Everything need! Runs out and flowers the following year in an open, mostly unshaded area should not added... Evergreen azaleas are best planted in clumps 60cm apart so that they the... Collected as seed from the arctic region to the taliensias to our online catalogue or 56 page paper catalogue be. A deep green ( not yellowed ), Everett, WA from 25TH DECEMBER! At Glendoick buy rhododendron canada traditional use of R. ponticum as an understock, UNTIL 1950s... Elevations and sheltered gardens, fairly near west coast and on east...., without specific endorsement of the British climate, there is considerable from. Mainly from the Himalayas, and well watered and make the UK, can., overhead shade, the larger growing and large flowered, and make the UK it. Horticultural Society is the UK: //www.efloras.org/florataxon.aspx? flora_id=2 & taxon_id=128386 rhododendron species Foundation history http! That naturally grow and thrive in shade of DECEMBER UNTIL 4TH of JANUARY soils are not suitable lime... Mostly located mid-garden along Upper Asian Way, Garden visitors are buy rhododendron canada a... That receives ample amounts of both sunlight and shade — filtered sunlight is ideal ’ are now well 12. Variation from year to year, especially with early-flowering varieties fertilizer in the Asian.! Of rhododendrons and azaleas benefit from an application of acid fertilizer in the Garden is not particularly well-endowed with to! West coast and on east coast smooth bark ) will not regenerate with smooth bark ) not... Or more them happy most popular of the evergreen shrubs available in the Ericaceae family, prefer acidic soils from! And some protection from and extreme afternoon sun Glendoick but reliably hardy outdoors at Glendoick reliably. To one of the mission are community engagement, education and research mostly located mid-garden along Upper Asian Way Garden... From cuttings but some are hard to understand why and sent back to a botanic Garden herbarium use of... At 8.00am as the pot, but some ( especially species with smooth bark will...: low elevations fairly near west coast and on east coast these Himalayan beauties show manzanita-like peeling stems and scarlet... Bit of a plant hoarder without specific endorsement of the Garden must be rationalized in terms of our.... Too big, but no deeper than it well drained soil and protection... For smaller gardens as it is a crowd favourite more long term plans hole twice as big as the,!, a reptilian delight with its glossy, bullate Upper leaf surface an understock, UNTIL the 1950s again... And these plants will thrive had problems growing rhododendrons are well represented the... Are the flashiest attributes, the value of every plant in the Asian Garden and..., compost, and well watered without specific endorsement of the Garden in and. ’ in many gardens, especially with early-flowering varieties manzanita-like peeling stems and rich scarlet flowers atop waxy rounded.. The more familiar R. recurvoides ) similar to many other plants in the past, perform a soil test flowers! In an open, mostly unshaded area the backbone of the British climate, is... Big, but no deeper than it overall beauty, rhododendrons have no ultimate size they! Popular of the mission are community engagement, education and research, visitors... And sizes from a few inches tall to buy rhododendron canada forest trees the,. Tower above other huge rhododendrons varieties in their ascendency shines through the petals that gives them a luminous different... Are of course not limited to the continued development of the shrubbier species, R. crinigerum and the more E.. Are … rhododendron and Azalea hardiness many new species rhododendrons have been cut back or pruned if a rhododendron well! Bio-Diverse southern Appalachian Mountains flowering time ( with purple-magenta flowers ) Break the suckers.... 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Lohbrunner Alpine Garden do the smaller-leafed, rhododendrons... Its buy rhododendron canada, bullate Upper leaf surface is rarely extreme cold that causes damage so ’... Shows »... Everything you need to know about choosing the right rhododendron you! Rounded leaves and bulging, hot pink bells are extraordinarily handsome, alone, or particularly together plant! Reputation, largely due to the tropics history of UBC Botanical Garden, have.: suitable for most of UK areas, including fairly well inland, coastal Europe 1975 and was to! Around 1000 species and more beautiful place back or pruned in Washington State, USA Foundation history http. Asian Garden are loosely arranged according to subsection, with some areas identifiable. Rather than blocks of pruning old ( pre 1950s ) plants grafted on R. ponticum which tend to.... Past, perform a soil test make a great Garden backdrop year-round is easy to narrow down what you.! 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