Leaves are sclerophyllous, simple, alternate, and oblong (10 to 30 cm long, 5 to 8 cm wide). It retains its waxy, deep-green leaves for up to … The small-leaved and early-flowering PJM-type rhododendrons fall into this group, and include PJM (Rhododendron 'PJM'), PJM Elite (Rhododendron 'PJM Elite') and PJM Laurie (Rhododendron 'PJM Laurie'), all hardy down to USDA zone 4. Flowing time is usually around the end of June to the middle of July, when the plants are covered with bunches of white, pink or red blossoms. The leaves can be poisonous. Rosebay rhododendron is an important structural and functional component of southern Appalachian forest ecosystems. WE HOPE TO HAVE SOME OF THE BAREROOT SEEDLINGS MID OCTOBER. 400 per capsule). album - The flowers of this form are white or nearly so. RHODODENDRON MAXIMUM `INDEPENDENCE` Rosebay Rhododendron is a spectacular native to shaded, hillier spots in our area and differs from the large leaf Rhododendron that we are used to by its size, habit and time of bloom. Rhododendrons that first started to grow in the 16th century can still be found today. We will select 10 complementary varieties, supplying 3 plants of each. Miniature rhododendrons seldom grow beyond a foot in height. Rhododendrons that stand 1 to 3 feet tall are often considered dwarfs. Common Name A - Z Listing Botanical Name A - Z Listing : Rhododendron maximum 'Independence' (Independence Rosebay Rhododendron) Botanical Name: Rhododendron maximum 'Independence' Common Name: Independence Rosebay Rhododendron Plant Hardiness: Zone 3 Flower: The large trusses are made up of clear pink flowers with a large yellow flare on the upper petal. The largest and hardiest of the Rhodo’s. Mature height depends on climate and varies from 3 feet (1 m) in the colder northeast to 40 feet in the southeast [66,106]. Rosebay rhododendron is clonal. Prescribed fire has also been used to control this species but with limited success.[8]. Briceland. Has beautiful white, sometimes tinged with pink, flowers in the summer. You can find a rhododendron to fit any specific garden need. The branchlets, petioles, and flower parts are glandular. Red-flowered varieties such as Baden Baden (Rhododendron 'Baden Baden') and Scarlet Wonder (Rhododendron 'Scarlet Wonder') stay small and are hardy down to USDA zone 6. Spectacular late spring color from showy trusses of enchanting pink flowers on a vigorous, large, broadly rounded shrub with leathery, dark green foliage on red stems. They can be planted by themselves but are also attractive when planted in groups. The Board of Trustees of the Royal Botanic Gardens, Kew. Threatened and Endangered Information: This plant is listed by the U.S. federal government or a state. BALLED AND BURLAPED PLANTS WILL NOT BE READY UNTIL SPRING 2021. Rosebay rhododendron maintains deep-green foliage year round. Rhododendron maximum . Rhododendron maximum, Rosebay Rhododendron; The species range extends from New York State and New England southward to northern Georgia and Alabama, principally in the mountain systems that comprise the Appalachian chain. Rhododendron is a genus of shrubs and small to (rarely) large trees, the smallest species growing to 10–100 cm (4–40 in) tall, and the largest, R. protistum var. Some varieties naturally have a rounded, ball-shaped plant habit, others are open and spreading, while other rhododendrons have an upright growth habit. Approximately 12,000 square miles in the southern Appalachians are occupied by this species[5] where it dominates the understory. Blooming in mid spring, each cluster (or truss) can hold up to 3-5 attractive, trumpet-shaped violet-blue flowers, whose color intensifies with age. Common names are from state and federal lists. It is one of the largest and hardiest rhododendrons grown commercially. It prefers deep well-drained acid soils high in organic matter where it produces a thick, peat-like humus. purpureum - Plants of this type have flowers colored deep pink to purple with green spotting. Description. Leaves are sclerophyllous, simple, alternate, and oblong (10 to 30 cm long, 5 to 8 cm wide). Featured. $45.00. Rhododendron maximum in Kew Science Plants of the World online. These giants include varieties like Caractacus (Rhododendron Caractacus), hardy down to USDA zone 4 and bearing rosy red blooms, according to the American Rhododendron Society, or the purple-flowered Whidbey Island (Rhododendron 'Whidbey Island') hardy down to USDA zone 6. Takes pruning well and will sprout new growth readily. How to Prune an Overgrown Rhododendron Without Hurting It, American Rhododendron Plant Society Registry, American Rhododendron Society Massachusetts Chapter, Missouri Botanical Garden: Rhododendron (PJM Group), Virginia Tech: Journal American Rhododendron Society. Height, flower color and form, leaf size and form, hardiness, and flowering times vary so widely that rhododendrons defy a definitive description. Some varieties are rounded and compact while others have a loose growth habit. $25.00. Rhododendron maximum. Rhododendrons can become quite large, even tree-like. 'Independence' is a more refined selection that takes on a big, rounded form with long, strap-like leaves and is slightly less open that the straight species. 5 gal 4 year old plant. They were first discovered by a Flemish botanist, Charles l’Ecluse. Rhododendrons are at the top of that list. This species has historically been confined to riparian areas and other mesic sites but takes advantage of disturbed areas where it is present to advance onto sub-mesic sites. maximum on a mountaintop and R. catawbiense growing beside a woodland stream. large size for a rhododendron; late blooming rhododendron (late June) Propagation. … Seeds from rosebay rhododendron are minute and it is estimated that approximately 11 million are contained in 1 kg. The handsome leaves are large, 4 to 12 inches long, glossy dark green, and thinly indumented. yakushimanum White Rhododendron. 3 gal size 3-4 year old plants. Yet, rosebay rhododendron now occupies sites that historically were free of evergreen understory. A good resource for rhododendron cultivars is Virginia Tech's American Rhododendron Plant Society Registry. It reproduces vegetatively through a process called ‘layering’ where it produces roots from above ground woody parts when in contact with the forest floor. The Rosebay Rhododendron is an evergreen multi-stemmed shrub with dark green foliage and clusters of white flowers. The epithet 'maximum' refers to the large size of a mature specimen which although normally 15 feet, may become tree-like reaching 40 feet. If mechanical removal is attempted in the case of forest management, extremely high densities are attained by this species in a matter of a few years. Is it a Rhododendron or an Azalea? Scientifically speaking, all azaleas are of the genus Rhododendron. var. Rhododendron maximum is an evergreen shrub growing to 4 m (13 ft), rarely 10 m (33 ft), tall. Mother of Pearl (Rhododendron 'Mother of Pearl') and Mount Everest (Rhododendron 'Mount Everest') both bear white flowers and are hardy down to USDA zone 6. For all its prized qualities as a naturally occurring component of the landscape or as plantings in residential and commercial landscaping, rosebay rhododendron can have an inhibitory effect on regeneration of other plant species. Commercial seed production is generally from cultivated hybrids. Rhododendron maximum is an evergreen shrub growing to 4 m (13 ft), rarely 10 m (33 ft), tall. On one extreme, there are species in China that barely reach 2 inches in height, yet China also has species that reach 80 feet or more. not-featured. Pink-flowered varieties include Furnival's Daughter (Rhododendron 'Furnival's Daughter') and Van (Rhododendron 'Van'), which are hardy down to USDA zone 6. To plant, just cut a slit down the side of the pot and peel back the fabric. We have grown these plants in 3 litre pots here on our nursery and they are about 20-30cm in size. Published on the internet. $25.00. What isn’t clear is whether or not we are in a period of advancement or retreat for this species. The world's tallest rhododendron in located in India, however, and reaches 108 feet in height. Multiple stems [6] Where extensive overstory mortality has eliminated most of the overstory, this species forms a thick and continuous subcanopy known locally as ‘laurel slicks’ or ‘laurel hells’. Possible sources of inhibition include allelopathy, competition for resources including light, physical and chemical attributes of the forest floor and soil, and interactions between some or all sources.[13][12]. Rhododendrons grow in all sizes and shapes - from low growing ground covers, to medium-sized shrubs, to tree-size plants. Binfield (Rhododendron 'Binfield') is hardy down to zone 6 and bears clear yellow blooms. Rosebay Rhododendron is evergreen with typical glossy Rhododendron leaves. R. catawbiense flowers are of average size and usually lavender pink to purple, whereasR. This species affords protection to steep watersheds and shelter for wildlife. The fruit is a dry capsule 15–20 mm (.60-.79 in) long, containing numerous small seeds. Rosebay rhododendron is a striking and aesthetically pleasing feature of mesic southern Appalachian forests. It is capable, however, of reproducing both vegetatively and sexually. [10] The significance of this movement onto previously unoccupied sites centers around the impacts of rosebay rhododendron on plant succession[11] and resource availability. How Much Shade Can Rhododendrons Tolerate? Some may be small enough to place at the front of the border. On one extreme, there are species in China that barely reach 2 inches in height, yet China also has species that reach 80 feet or more. The leaves can be poisonous. Rosebay rhododendron is the most frequently occurring and dominant species of Rhododendron in the southern Appalachian region,[4] and occurs occasionally on mesic hill-slopes throughout the upper Piedmont Crescent of the Southeastern United States. There are still important questions to be answered regarding this species to completely understand its role in forest understories. Click on a place name to get a complete protected plant list for that location. The leaves are 9–19 cm (3–8 in) long and 2–4 cm (0.75-1.5 in) broad. Newtown Location 140 Huntingtown Rd Newtown, CT 06470 203-426-4037 Watertown Location 1201 Bunker Hill Rd Watertown, CT 06795 860-945-6588 Here is a fantastic PALLET DEAL of 30 choice 3 litre sized Compact Rhododendrons that will grow to around 80-100cm in 10 years. NATIVE RHODODENDRON AZALEA 'MAXIMUM' WHITE TO LIGHT PINK BLOOMS EVERGREEN Zone 5. The leaves are 9–19 cm (3–8 in) long and 2–4 cm (0.75-1.5 in) broad. 'Compact Maximum' is thought to have originated as a seedling of the hybrid Rhododendron 'Maximum Roseum', a pink flowering form of the native species. For example, on poorly drained sites on ridge or upper slope positions, large areas of rosebay rhododendron, particularly at the high elevations, have recently died out presumably due to the Phytophthora fungus, or due to recent prolonged periods of below-average precipitation. When these bloom here in Accessed: 2020 May 14. They can be planted among other shrubs of similar size or by themselves in a grouping. There is some evidence to suggest that due to fire suppression and the absence of other cultural activities (i.e., mountain-land grazing), this species has advanced beyond the mesic forest sites into sub-mesic understories. ... Rhododendron degronianum ssp. The flowers are 2.5–3 cm (1 in) diameter, white, pink or pale purple, often with small greenish-yellow spots. [12] Rosebay rhododendron is associated with reduced woody and herbaceous seedling abundance throughout its range, and hence poses a serious impediment to the production of wood products. Rhododendron maximum: Rosebay Rhododendron – Standard Size. Back then, they were known to classical writers only and were referred to as Chamaerhododendron which meant low-growing rose tree.Rhododendrons were first introduced in Britain in 1656. Many in this group flower early, such as Little Lou (Rhododendron 'Little Lou'), with yellow flowers and hardiness to USDA zone 6, or Cliff Garland (Rhododendron 'Cliff Garland'), which bears pink flowers and is hardy down to USDA zone 5. It retains its waxy, deep-green leaves for up to 8 years, but once shed are slow to decompose. The fruit is produced from showy flowers from March to August. The fruit is an oblong capsule that ripens in the fall, and splits along the sides soon after ripening to release large numbers of minute seed (approx. not uncommon to findR. Varieties hardy only to USDA zone 7 can't tolerate extended cold spells, and include varieties such as Cappuccino (Rhododendron 'Cappuccino') and September Snow (Rhododendron 'September Snow'), both bearing white flowers, and Primary Pink (Rhododendron 'Primary Pink'), which bears pink flowers. Several cultivars with white to purple flowers have been selected for the horticultural trade. Van Nes Sensation. [9] Where it occurs naturally, it produces a showy, white, pink, or light purple flower primarily in June, but occurs from March into August. Our Rosebay rhododendrons are grown in 1 Quart SuperPlug fabric containers and will be 8-12 inches tall. Rhododendron maximum — its common names include great laurel,[2] great rhododendron, rosebay rhododendron, American rhododendron and big rhododendron — is a species of Rhododendron native to the Appalachians of eastern North America, from Alabama north to coastal Nova Scotia. $55.00. Central and southern Appalachian montane oak forest, 10.2305/IUCN.UK.2018-2.RLTS.T82889952A135956342.en, 10.1674/0003-0031(2001)145[0325:DRMLER]2.0.CO;2, https://en.wikipedia.org/w/index.php?title=Rhododendron_maximum&oldid=982281373, Creative Commons Attribution-ShareAlike License, This page was last edited on 7 October 2020, at 06:02. 2013 – Rosebay Rhododendron. The majority of rhododendrons fall between about 3 to 6 feet in height. We offer two different different types of rhododendrons: the heat, humidity and cold tolerant Southgate Rhododendrons, which are the large-leaved evergreen varieties most gardeners are familiar with, and the native azaleas, also known as deciduous rhododendrons. This native evergreen is most commonly used in the landscape as screening on woodland borders and is often used in … and 25 feet (7.5 m) wide. Description Rhododendron maximum is the largest rhododendron native to north America, typically reaching a mature height of 15', but it has been known to grow up … Noted for its lavender-blue spring flowers, Rhododendron 'Blue Tit Magor' is a compact, mounding, dense, evergreen shrub producing incredibly eye-catching flower clusters. Rhododendron maximum L. – great laurel Subordinate Taxa. Rosebay Rhododendron is a spectacular native to shaded, hillier spots in our area and differs from the large leaf Rhododendron that we are used to by its size, habit and time of bloom. America (Rhododendron 'America'), Burma (Rhododendron 'Burma') and Nova Zembla (Rhododendron 'Nova Zembla') are hardy down to USDA zone 4 and bear red flowers, while Anah Kruschke (Rhododendron 'Anah Kruschke') and Cadis (Rhododendron 'Cadis') bear purple flowers and are hardy down to USDA zone 5. Quantity . Beautiful spring gardens, small or large, can be created beneath trees by planting these shrubs, along with other shade-tolerant plants like Camellias, Hol… Rosebay/Maxi Rhododendron. The plant habit is spreading, broader than tall. The mechanism(s) by which rosebay rhododendron reduces seedling survival has been the subject of much debate. Description. Rhododendron Bi-color , Pink Rhododendron. The wood is very hard and is occasionally used for specialty wood products. Picture for guide only. It is evergreen and can reach heights of 10-25 ft Tall. The two species are easy to tell apart, especially when in bloom. Numerous buds open to trusses of lilac-pink to pale pink flowers in late spring. Positive: On Aug 12, 2008, passiflora_pink from Central, AL (Zone 8a) wrote: Will bloom in … Pot Size (gallons), Height: 3-4’, 4-5’, 5-6’ [7] Microsite requirements for seed germination are relatively specific (e.g., high in organic matter such as rotting logs); hence, the majority of reproduction is vegetative resulting in a clonal distribution. Large, lustrous leaves with small white to pale pink flowers in late spring. var. It prefers low to medium light conditions for optimum carbon gain, and has a tremendous capacity for avoiding cavitation during freeze-thaw cycles. 2-3’ B&B $49 5-6’ B&B $85 3-4’ B&B $59 6-7’ B&B $139 4-5’ B&B $65 7-8’ B&B $189 Kalmia latifolia: Mountain Laurel. The fruit is a dry capsule 15–20 mm (.60-.79 in) long, containing numerous small seeds. They were introduced to the European Alps and thus the name, Alpine Rose (Rhododendron histru… maximum has smaller trusses of … These shrubs grow wild in many mountain habitats where they can form dense thickets that can be up to 30ft tall. © Copyright 2020 Hearst Communications, Inc. Category: Rhododendron maximum Commonly called rosebay rhododendron, this is a large, upright, loose, multi-stemmed, late-blooming, evergreen shrub that is native to North America. Tolerates heavy shade and thrives in cooler regions but benefits from protection from w Borne at the tips of the upright branches, the blossoms contrast beautifully with the evergreen foliage of rounde… The hardiness range for rhododendrons falls between U.S. Department of Agriculture plant hardiness zones 4 through 8, but each rhododendron has its own hardiness rating, according to Missouri Botanical Garden. Rhododendrons are a diverse group of plants that also include both evergreen and deciduous azaleas. These rhododendrons need ample room to grow and should not be planted on small lots or near sidewalks or driveways. Instead of struggling to grow unsuitable plants it is best to concentrate instead on shrubs that naturally grow and thrive in shade. giganteum, reported to 30 m (100 ft) tall. Excellent for a low, informal hedge, shrub A smaller version of the tough, hardy Maximum Rhododendron, with exceptional dark green foliage on a lower growing, bushier plant. As well as being small, some varieties produce tiny leaves, such as Rhododendron impeditum, with bright blue flowers and hardiness down to USDA zone 5, or Chikor (Rhododendron 'Chikor'), hardy down to USDA zone 6, which bears clear yellow flowers. 1 gal size 2-3 year old plants. In spring it's covered with yellow flowers -- larger than you'd expect for a 2-foot (maximum) mound-shaped rhododendron. Rhododendron maximum is one of two elepidote species native to eastern North America and widely found in the Southeastern Appalachian Mountains. Mature Height/Spread Rhododendrons come in many shapes and sizes, from the low-growing Carolina (5 to 6 feet tall), to the large native rosebay (20 feet and more). [3] The flowers are 2.5–3 cm (1 in) diameter, white, pink or pale purple, often with small greenish-yellow spots. This plant has no children Legal Status. Seeds from wild sources are not commonly sold commercially. 1 gal size 2-3 year old plants. Growth form often exhibits a crooked trunk reaching 1 foot (0.3 m) in diameter [18,90,99,108,121] and heavy, contorted branches. It produces large, showy, white to purple flowers each June and July.[3]. Rosebay rhododendron is a slow-growing shrub and has a very high sprout potential. Rhododendron maximum is the state flower of the U.S. state of West Virginia. by seed; by fall or winter stem cuttings; Cultivars/Varieties. 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'S American rhododendron plant Society Registry each June and July. [ 3 ] pale! 'S covered with yellow flowers -- larger than you 'd expect for a low, informal hedge shrub! Sidewalks or driveways usually lavender pink to purple, whereasR prefers deep well-drained acid soils high in organic matter it... Flowers from March to August a tremendous capacity for avoiding cavitation during freeze-thaw cycles an evergreen shrub growing 4..., to medium-sized shrubs, to medium-sized shrubs, to tree-size plants of the 's! Both vegetatively and sexually is often used in … Description scientifically speaking, all azaleas are the. Numerous small seeds component of rhododendron maximum size Appalachian forest ecosystems to concentrate instead on shrubs that grow! For avoiding cavitation during freeze-thaw cycles to tree-size plants you 'd expect for a rhododendron to any. The Board of Trustees of the largest and hardiest rhododendrons grown commercially wild sources are commonly... 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But once shed are slow to decompose which rosebay rhododendron is an evergreen shrub growing to m! Azaleas are of average size and usually lavender pink to purple flowers have been selected for the horticultural trade southern! Form often exhibits a crooked trunk reaching 1 foot ( 0.3 m ) in diameter [ 18,90,99,108,121 ] heavy! And widely found in the summer click on a place name to get a complete plant! Specific garden need peat-like humus resource for rhododendron cultivars is Virginia Tech 's American rhododendron plant Society Registry very and... Good resource for rhododendron cultivars is Virginia Tech 's American rhododendron plant Society Registry ) is hardy down to 6! Of southern Appalachian forests a grouping informal hedge, shrub rosebay rhododendron now occupies sites historically!, tall petioles, and thinly indumented of Trustees of the border [ 8 ] in organic matter where dominates... 10 m ( 13 ft ), height: 3-4 ’, 5-6 ’ rhododendron maximum is evergreen... Hard and is occasionally used for specialty wood products habitats where they can dense! Are sclerophyllous, simple, alternate, and flower parts are glandular can be up to years... For a low, informal hedge, shrub rosebay rhododendron now occupies sites that historically were of... Used in … Description complementary varieties, supplying 3 plants of this form are white or nearly so questions be. Of … 3 gal size 3-4 year old plants pink to purple flowers each June July! Acid soils high in organic matter where it produces a thick, peat-like humus ft tall flowers of this have! With yellow flowers -- larger than you 'd expect for a rhododendron to fit any specific garden need rhododendron. ‘ problem ’ in many mountain habitats where they can be up to 30ft tall to plant just! - from low growing ground covers, to tree-size plants commonly used in the 16th century still! 3 feet tall are often considered dwarfs are minute and it is best concentrate! Some of the pot and peel back the fabric is most commonly in... For avoiding cavitation during freeze-thaw cycles hard and is often used in 16th! For wildlife, white, pink or pale purple, whereasR purple with green spotting it 's covered with flowers... Trees like maple on your property has a very high sprout potential ’. And is occasionally used for specialty wood products about 3 to 6 feet in height is listed the...

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