The fastest-growing rhododendron cultivars grow 7 feet in 10 years, according to the American Rhododendron Society's website. Rhododendron catawbiensis ( Catawba Rhododendron ) A vigorous, rounded, dense, spreading evergreen large shrub to small tree, typically maturing at 12 or more feet, that is native to the eastern U.S. ( from central Tennessee to eastern Kentucky to far western Maryland to central Virginia; south to northeast Alabama to northern Georgia to western South Carolina to central North Carolina ). Prefers a sun dappled or high open shade. Shrub. Features glossy, leather-like leaves that are elliptic to oblong and 3–6" long. Planted as much for the large evergreen foliage as it is for the flower display. Must have good drainage, and needs light shade. Temperature optima, leaf area, and dry weight distribution HortScience 29 1298 1302 Azaleas generally mature from 2' to 4' in height and width, and Rhododendrons generally mature from 4' to 10' in height and width. Plant in a location protected from strong winds. Grows to 5' tall and wide. Moderately short-lived, reaching an age of 50-100 years under ideal conditions. It is native to This evergreen shrub with glossy leather-like foliage is one of America's most beautiful plants. Growth Rate Scientific Name Spread Exposure Moisture Catawba Rhododendron 'Chionoides'-Clusters of white flowers in the spring.-This native of North America … Growth Rate This shrub grows at a slow rate, with height increases of less than 12" per year. Rhododendron catawbiense 'Album' Mature Height 5 - 6 feet Mature Spread 5 - 6 feet Sun Exposure Full Shade Soil Type Acidic, Well Drained Moisture Moderate Growth Rate … It is also tolerant of heat and sun. Dark green above, light green beneath. Gets 5' tall and 6' wide. Beautiful Withstands temperature extremes without injury, cold tolerant to -25°F and has excellent heat tolerance. This shrub is considered both an evergreen shrub and a flowering shrub. Catawba rhododendron is a large-leaved, evergreen shrub reaching 6 to 10 feet high with large, lilac-purple flowers borne in clusters (trusses) in mid-to late spring. One of the hardiest and best known of all the broadleaf evergreen rhododendrons, but still requires good drainage. Its relatively coarse texture can be used to stand it apart from other landscape plants with finer foliage. Album Catawba Rhododendron 10P Landscape Pot Description Application Care Attributes This species of Rhododendron features large, dense foliage to the ground and large white flowers that bloom in … There is more than one form sold under this name. Avoid drought and compaction. These wild types, called species (as differentiated from hybrids), are native to the temperate regions of Asia, North America, and Europe, as well as to the tropical regions of southeast Asia and northern Australia. 1994 Seedling growth of catawba rhododendron. Flower buds flushed lilac, opening to pure white flowers with greenish-yellow spotting, held in compact, rounded trusses. As with many Azaleas and Rhododendrons, all parts of this plant are poisonous. Catawba Rhododendron, Catawba Rosebay, Sappho Rhododendron General Description Sappho rhododendron has large, showy clusters (trusses) of broad, open, bell-shaped flowers of clean white with striking deep purple blotched throats. Rowe D.B. Best grown in acidic, organically rich, humusy, medium moisture, moisture-retentive but well-drained soils in part shade. Rhododendron Catawbiense Album (Catawba Rhododendron (Elepidote)) Clusters of pale lilac-pink buds open to reveal white flowers with a contrasting yellow blotch that bloom on glossy, deep green evergreen foliage, which turns bronze in fall. Rhododendron Catawbiense Grandiflorum (Catawba Rhododendron (Elepidote)) Clusters of dark lilac buds open to reveal pale lavender flowers with a contrasting apricot blotch that bloom on glossy, deep green evergreen foliage, which retain their colour in fall. Prefers a moist, acidic, organic-rich soil. The Catawba rhododendron grows in acidic, loamy, moist, rich, sandy, silty loam and well-drained soils. The catawba rhododendron can be expected to grow in Hardiness Zones 4–8. With age bark changes to brown, glabrous. Growth Rate: Fast More Information: Size & Form A hybrid evergreen rhododendron reaching 3 to 6 feet high and wide. upright clump growth habit in … Excellent for shade gardens or in a sheltered site. Flower buds are large and pointed, on the species yellowish-green opening to lilac-purple or sometimes purplish-rose, with green/yellow-brown markings on the inside of the corolla. Makes a great plant for foundation plantings, hedges, mass plantings, woodland gardens, shade gardens or as an accent plant or specimen plant in the landscape. Shrub. Moderate Growth Rate S un: Partial Sun Feature: Year-round Interest Rhododendron - Lee's Dark Purple Growth: 6 - 7 ft. A medium-sized, 6-8' tall & wide, vigorous grower with reliable flowering with large trusses of lavender-pink (rosy purple or rose-lilac) blooms. Growth Rate Slow growth-rate Leaf Color Green Leaf Margins Entire Leaf Shapes Elliptic Leaf Type Simple Leaf Venations Brachidodrome Persistence Broadleaf Salt Tolerance Does not tolerate salt Shape Rounded Soil Condition Stunning clusters of white trumpet-shaped flowers in mid-spring. A million members, donors, and partners support our programs to make our world greener and healthier. Plants perform well on north or east facing slopes. The following taxa are (or were) represented in the collections at Boone County Arboretum. Zones 4-8. Good plant vigor. Aug 18, 2016 - Catawba Rhododendron 6'-10' Tall 5'-8' Wide Evergreen Blooms in Spring Plant in Full Sun or Part Shade Acidic/Fertile Moist soil Slow Growth Rate www.greenprintLED.com Large clusters of lilac to purple to rose flowers bloom April-June, providing a valued food source for bumblebees. It keeps its foliage year-round and blooms in a profusion of spring flowers. F orm. National champion is 25' tall by 15' wide. Rhododendron catawbiense, commonly called Catawba rhododendron or mountain rosebay, is a large, rounded to spreading, multi-stemmed, broadleaf evergreen shrub that typically grows to 6-10’ (rarely to 20’) tall. Beautiful when used in groupings or mass plantings. Introduced 1809. Shrub. Use Catawba Rhododendron in shrub borders, foundation plantings, and natural areas around your yard. View Map. This shrub grows at a slow rate, with height increases of less than 12" per year. On new stems, bark is yellowish-green. Great hardiness down to -25°F. Evergreen: Leaves alternately arranged, simple, broadleaf evergreen, elliptic to oblong, 3-6" long and 1-2" wide. Bed 40, Rhododendron catawbiense 'Roseum Elegans' // Roseum Elegans Catawba Rhododendron The Catawba rhododendron grows to a height of 6–10' and a spread of 5–8' at maturity. This medium-sized, dense, broadleaf evergreen shrub has large, glossy, dark Also native to a few counties in east-central and southeast Kentucky. Also used as a foundation plant or a specimen plant, or for shady sites. Rhododendron catawbiense, commonly called Catawba rhododendron or mountain rosebay, is a large, rounded to spreading, multi-stemmed, broadleaf evergreen shrub that typically grows to 6-10’ (rarely to 20’) tall. Catawba Rhododendron is a broadleaf evergreen shrub. Morning sun with afternoon shade is also acceptable. The Maximum Growth Rate of Rhododendrons | Hunker Design Additional taxa may be available in the trade that are not included here. Bed 38, Rhododendron catawbiense 'Roseum Pink' // Roseum Pink Catawba Rhododendron The Arbor Day Foundation is a 501(c)(3) nonprofit conservation and education organization. Fruit in dehiscent capsules, 5-valved. Strong grower making a broad, full plant with clear pale pink flowers. Needs moist, acid, organic soil, pH 4.5-6.0. 4-season interest: Spring, Summer, Fall, Winter. Mulch will be helpful. Lavender-red to pure red flowers. Produces large clusters of lilac-purple, sometimes purplish rose, blossoms in the spring. Protection from winter wind is helpful to prevent winter desiccation. Choose heat-tolerant kinds. The world's most glorious rhododendrons grow in Seattle, Ireland, England, New Zealand, and other places in the Goldilocks zone where it's not too hot, not too cold, but just right. It is native to Rhododendron - Catawba Alba Growth: 5 - 6 ft. Grandiflora Catawba Rhododendron Botanical Name Rhododendron 'Catawbiense Grandiflorum' Container/Amount 3 gallon Evergreen or Deciduous Evergreen Hardiness Zone 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b Growth Rate It is also tolerant of heat and sun. Excellent as an accent plant, specimen plant, native garden plant, or used in a mass planting, in shade gardens, or in a naturalized planting. Keys to Not Killing Your Rhododendron 1. Do not site plants within or near the drip line of trees in the walnut famil… One of the best selections for the Midwest, cold tolerant to -25°F and also quite heat resistant, so also does well in the South. Kentucky Native — Native to the Alleghenies, West Virginia, southwest to Georgia and Alabama. Average mature size 6-10' tall and 5-8' wide, rarely to 15-20' tall. Temperature optima, leaf area, and dry weight distribution I. It tends to be a little leggy, with a typical clearance of 1 foot from the ground, and is suitable for planting under power lines. Large bell-shaped trusses of lavender flowers with occasional reddish brown markings provide a spectacular display in spring. Each flower 1.5-2.5" wide, grouped in 5-6" wide racemes, late May. Grows with an upright habit, up to 6-8 ft. tall (180-240 cm) and 5-7 ft. wide (150-210 cm) Petiole 0.5-1.25" long. One of the hardiest and most dependable, this classic Ironclad rhododendron … Rhododendron catawbiense 'Album' // White Catawba Rhododendron Pruning Rhododendron's for compact habit and dense growth in three easy steps that anyone can do. Boursault catawba rhododendron has large, showy clusters (trusses) of tubular, broad bell-shaped flowers of lavender-pink with green spotted throats. National champion is 25' tall by 15' wide. Prevent your large leaf Rhododendron's from getting leggy. Excellent lustrous dark green foliage through winter. This Catawba hybrid is regarded as one of the most popular red rhododendron for severe climates. Susceptible to botryosphaeria canker, crown rot, dieback, leaf spots, leaf scorch, powdery mildew, rust, shoot blight, shoestring root rot, wilt, aphid, lace bug. Slow growth rate. Rhododendron Catawbiense English Roseum - Catawba Rhododendron 71741B Item Size Form Package Available Location Quantity Your Price Option Item 71741-230 Size 30 in. A dense-growing, small evergreen shrub, with showy red flowers, often used for foundation plantings, as an accent plant, in hedges, mass plantings, privacy screens, woodland gardens, or shade gardens. White Catawba Rhododendron is a multi-stemmed evergreen shrub with an upright spreading habit of growth. Usually taller than wide, but does form a rounded shape with large, dense foliage to the ground. -- not currently in our collection --, Rhododendron catawbiense 'Nova Zembla' // Nova Zembla Catawba Rhododendron Full sun and partial shade are best for this shrub, meaning it prefers a minimum of 4 hours of direct, unfiltered sunlight each day. Warren S.L. Family - Ericaceae Rhododendron catawbiense Native Region – Virginia to Georgia Catawba Rhododendron USDA Hardiness Zone - 4 Function Height Spread Border, screen, massing, specimen 6-10’ 5-8’ Growth Rate Texture The dense, upright habit has a uniform, spreading branch structure with broad, evergreen leaves. 9190 Camp Ernst Road, Union, KY 41091Contact | Site Map, Boone County Cooperative Extension Service. Dark green foliage. Requires well Bed 42. Grows to 6' tall with excellent lustrous dark green foliage. Is sensitive to salinity, high pH, and winter injury. Zone 4 hardy to -25°F. White Catawba Rhododendron will grow to be about 6 feet tall at maturity, with a spread of 6 feet. I. Catawba Rhododendron Mature Size, Growth, Longevity Average mature size 6-10' tall and 5-8' wide, rarely to 15-20' tall. Shrub. This is a relatively Large, narrow, dark green foliage cloaks the upright, rounded form. Tolerates a fair amount of sun in cool northern summers, but leaves may scorch in hot afternoon sun in the St. Louis area. R. calendulaceum There are more than 1000 different natural species in the Genus (group) Rhododendron. Tree & Plant Care Best planted in spring. The cultivar name, 'Roseum Pink', is sometimes used interchangeably with 'English Roseum'. Blazich F.A. The Catawba rhododendron grows to a height of 6–10' and a spread of 5–8' at maturity. Glabrous and leathery texture. Boone County Arboretum is a partnership between Boone County Cooperative Extension Service, Boone County Fiscal Court, and Friends of Boone County Arboretum. It grows at a slow rate, and under ideal conditions can be expected to live for 40 years or more. 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