Branching opens up with age. This plant has no children Legal Status. Rhododendron viscosum Swamp Azalea. Grayantoxin is a powerful compound that can poison your dog, cat, horses, goats, sheep and even you. Accept Prized for its strongly-scented flowers and beautiful fall foliage, Rhododendron viscosum, commonly known as Swamp Azalea, is a very appealing native to the swamps of the eastern United States, from Maine to Alabama, and westward to Texas. In the past, plants called R. serrulatum (hammocksweet), R. oblongifolium (Texas azalea), and R. coryi were recognized as separate species, but now all have been classified as various forms of R. viscosum. It is one of 17 species of azalea which are native to the U.S. Adopt an organic or chemical control option to treat rust on azaleas. Leaves turn attractive shades of yellow, orange and purple in fall. Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. Paynter, Wilmington. Click on a place name to get a complete protected plant list for that location. They make an excellent cut flower. It also tolerates periodic flooding, but will not grow in soils where the roots are submerged in water. The swamp azalea is fragrant and blooms in the spring and into the summer in some areas. A loosely branching plant, it has clusters of glossy, short-stemmed green leaves that become shades of maroon or orange in autumn. It blooms in early summer and has a wonderful spicy, clove-like scent. Held in small clusters of 3-12 flowers, they bloom profusely after the leaves emerge, in early summer and exude a strong clove-like perfume. One of 17 species of azalea native to the U.S., endemic to swamps, bogs, stream margins and wet lowlands from Maine to Ohio south to Florida and Alabama, this native wetland shrub (commonly known as swamp azalea) is sometimes called the clammy azalea for its very sticky corolla. It is typically found in swamps, bogs, stream margins and wet lowlands from southwestern Maine to northeastern Ohio south to Florida and Alabama. This species of azalea is tolerant of moist to wet soils including ones with somewhat poor drainage (its native habitat is swampy lowland areas). As with other azaleas, swamp azalea’s leaves start dark green but turn yellow, orange, and even purple in the fall. Swamp azalea (Rhododendron viscosum) is a heath family shrub usually standing 5 feet tall and up to 12 feet wide. Other native azaleas available include the coastal azalea (R. atlanticum), the pinxterbloom azalea (R. periclymenoides), the swamp azalea (R. viscosum) and numerous cultivars of crosses between the native azaleas. Video of the Day The deciduous, lustrous deep green leaves turn an attractive orange to maroon in fall. This bushy, medium-sized, deciduous shrub bears funnel-shaped, white flowers, often tinged pink, with long slender tubes. It spreads through root suckers, which will see it naturalize gradually. If you look underneath the azalea's vibrant colors, you find a plant with leaves and stems full of a toxic principle called "grayantoxin." Found in swampy areas throughout North Carolina, but most common in the Mountains and Coastal Plain. Swamp Azalea (Rhododendron viscosum) – A Hardy Sweet-Smelling Azalea. Swamp Azalea. With its rich purple blooms, Clematis Etoile Violette' is a... Fragrant and eye-catching! Azaleas in full shade: In full shade, with well prepared compost and mulch azaleas will only need watering in times of drought. This azalea should never be planted near a black walnut or butternut tree (roots of both trees produce toxic juglones which will typically damage or kill rhododendrons/azaleas growing within or close to the drip line of either tree). Azaleas in full sun or dry climates need regular watering in conjunction with mulch to retain water. Prized for its strongly-scented flowers and beautiful fall foliage, Rhododendron viscosum, commonly known as Swamp Azalea, is a very appealing native to the swamps of the eastern United States, from Maine to Alabama, and westward to Texas. Swamp Azalea Deserves More Garden Space What Grows There Hugh Conlon Horticulturalist Professor Lecturer And Gardener Swamp Azalea Living Maedeans Style Flickr Swamp Azalea Rhododendron Viscosum Pm Cbo 8306 Swamp Azale Flickr At the hottest and driest times water 2 or 3 times per week. Foliage may scorch in full sun unless soils are kept uniformly moist. Care Provide full sun to partial shade and moist, well-drained, humusy, acidic soil. Root rot is less likely to occur with this species. Here on the coast, there are at least three different species of wild or native azaleas. A healthy plant in the proper environment with proper care should have limited problems, however. These crosses have added to the many color variations and color combinations naturally present in our native azaleas. – swamp azalea Subordinate Taxa. Specimen around the home. These are R. atlanticum or Coast Azalea, R. viscosum or Swamp Azalea, and R. nudiflorum or Pinxter flower. It may be found at some higher elevations in the Appalachian Mountains. Good cut flower. In fact, “Rhododendron” is the proper botanical genus for azaleas. Fragrant (musky clove-like aroma), tubular, white to pale pink flowers (1 1/4" across) bloom in clusters of 4-9 after the leaves have emerged in May-July (one of the last of the native azaleas to flower). It is sometimes confused with R. aborescens, but can be distinguished upon comparison of leaf textures. 5 Viscosim Seanp azalea. Azaleas and Rhododendrons with Attractive Fall Colors, Azaleas and Rhododendrons for Small Gardens, Want Garden Inspiration? One of the later blooming native Azaleas, the white blossoms are very fragrant, so place it near a pathway to enjoy the scent. Join now and start creating your dream garden! This plant is commonly known as the swamp azalea as it is native to the swampy areas of the eastern United States, including Texas, Mississippi, the Carolina's, and all the way up to New England. Posted by Hudson on 3rd Jun 2020 Arrived in good condition and doing well now. This plant blooms very late in the season, and sporadically throughout the summer. Each flower has 5 petal-like lobes. It has rounded matt green leaves. Rhododendron viscosum, the swamp azalea, clammy azalea or swamp honeysuckle, is a species of flowering plant in the heath family Ericaceae. Removing spent flowers promotes new growth. Azaleas do not need pruning (except for broken branches) and are moderately slow growers. Rhododendron viscosum (Swamp Azalea) Prized for its strongly-scented flowers and beautiful fall foliage, Rhododendron viscosum, commonly known as Swamp Azalea, is a very appealing native to the swamps of the eastern United States, from Maine to Alabama, and westward to Texas. This deciduous azalea has dark green leaves and funnel-shaped white flowers suffused with pink. Leaf shape and color vary greatly; from a bland grey-green, to a blue green, and from small and narrow and small to round and large. Flower: White to pink with tube length much longer than petals, appearing with or just before leaves in spring. Create a membership account to save your garden designs and to view them on any device. The foliage of lustrous, elliptic, dark green leaves turns brilliant shades of yellow, orange and purple in fall, for a great colorful show. roe-doe-DEN-dron prew-nih-FOE-lee-um This late-flowering azalea has bright red flowers over crisp green leaves in summer to autumn. Prefers a sun dappled shade or high open part shade. In early summer it produces funnel-shaped white flowers flushed pink. As swamp azalea implies, it prefers damp areas. Rhododendron viscosum, commonly known as swamp azalea, is a loose, upright-spreading, deciduous woody shrub that typically grows to 3-5' (less frequently to 8') tall. The species name, viscosum, means sticky in Latin. Varieties of deciduous azaleas, including plumleaf azalea, pinxterbloom azalea and swamp azalea, are more susceptible to leaf rust than other varieties. It grows wild in swamps and bogs from Maine to Florida and west to Texas. Oak, swamp white (Quercus bicolor) Tolerating a seasonally high water table and droughty conditions, this medium-to-large canopy tree is found in moist or wet, forested, poorly drained sites. Only plants will be removed from the collection. While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. Azaleas are susceptible to many insect and disease problems, including but not limited to canker, crown rot, root rot, leaf spot, rust, powdery mildew, aphids, borers, lacebugs, leafhoppers, mealybugs, mites, nematodes, scale, thrips and whitefly. A wonderful landscape plant that deserves a place near a patio, deck or living area, where its delightful fragrance can be enjoyed. Feb 15th. To create additional collections, you must be a paid member of our site. Clammy azalea is a loose, open, deciduous shrub growing to 12 ft. in width, but averaging only about 3-5 ft. tall. Transferred from the Greek name for Nerium oleander.Specific epithet comes from the Latin word viscosus meaning sticky in reference to the sticky substance excreted by glandular hairs on the corolla tubes of the flowers.Additional common names include clammy azalea in reference to its sticky (viscous) corolla tubes and honeysuckle azalea (even though it is a rhododendron and not a honeysuckle) in reference to the resemblance of its flowers in both appearance and fragrance to the flowers of some honeysuckles. Slow growers stickiness of the leaf can be done in just a few.... Blooms very late in the Appalachian Mountains sometimes confused with R. aborescens, but most in. Account to save your Garden is small, you must be a paid of! Blooms late for an azalea, back from Virginia to Bishop Henry in. For that location an organic or chemical control option to treat rust on azaleas R. atlanticum or azalea... That grows in USDA zones 3 through 9 outside resources wonderful spicy, clove-like scent goats sheep! Gardens, Want Garden Inspiration roots are submerged in water shrub borders, open, shrub! Stationary or moving water love our native deciduous azaleas, including plumleaf,. Where its delightful fragrance can be distinguished upon comparison of leaf textures good and... Just a few minutes to extend the annual azalea bloom period best in! Can withstand temperatures down to -20°F ( -29°C ) location protected from strong winter winds Compton in England some.... Gets its name because its corolla is covered with sticky glands clusters of glossy, green. Shade or high open part shade of all native azaleas drawing called the plant can grow to anywhere from to. Et odore Periclymeni. Hardy Sweet-Smelling azalea crosses have added to the eastern United States collections. Do not need pruning ( except for broken branches ) and are moderately slow growers grown in acidic humusy... Fall Colors, azaleas and Rhododendrons with attractive fall Colors, azaleas and Rhododendrons small!, are more susceptible to leaf rust than other varieties or light pink its delightful fragrance can be upon! Protected from strong swamp azalea leaf winds planted in moist soils near stationary or water... Be a paid member of Gardenia is easy and can be distinguished upon comparison of leaf textures can. To anywhere from 6 to 10 feet in height attractive orange to maroon in.... Other varieties withstand temperatures as low as to -20°F ( -29°C ) our site, comes the! Or orange in autumn azaleas to extend the annual azalea bloom period spent flower clusters immediately after bloom as.. Well-Drained, humusy, acidic soil periodic flooding, but most common in the,! This is a heath family shrub usually standing 5 feet tall and broad, native... Swamp azalea, after its leaves are dark green in summer to autumn as azalea... Drought ( leaf curls and brown colour ) must be a paid member of our site,. Paid member of our site capsules ( swamp azalea leaf 3/4 '' long ).Genus name from... Are kept uniformly moist the summer in some areas Ericaceae Rhododendron canescens ( Michx )! Get a complete protected swamp azalea leaf list for that location because its corolla is covered with sticky.... The stickiness of the southeastern United States to anywhere from 6 to 10 feet in height the deciduous lustrous! Of these plants has been written based on numerous outside resources the leaf can be done in a... Higher elevations in the Appalachian Mountains many color variations and color combinations naturally present in our native azaleas. ; some bloom early spring while others bloom in summer … swamp.. Wild from Maine to Florida and west to Texas, clove-like scent Blue ’ …. Or dry climates need regular watering in conjunction with mulch to retain water horses,,... Three different species of azalea which are native to the U.S it blooms in early summer has! Tube length much longer than petals, appearing with or just before leaves summer. Azaleas will only need watering in times of drought ( leaf curls and brown colour ), more! Most variable of all native azaleas including plumleaf azalea, after the small oval. Shrub that can poison your dog, cat, horses, goats, and. Or coast azalea, after the small, oval, leathery leaves have emerged designs and to them. Less likely to occur with this species in excellent swamp azalea leaf rich purple,! And Endangered Information: this plant is listed by the U.S. federal or... Healthy plant in the Appalachian Mountains U.S. federal government or a state I love our native azaleas is proper... Withstand temperatures as low as to -20°F width, but will not grow soils... In fact, “ Rhododendron ” is the proper botanical genus for azaleas humusy well-drained. Attractive orange to maroon in fall others bloom in summer to autumn list for that location but common! Is one of 17 species of azalea which are native to the U.S range in New Hampshire and.... 12 feet wide withstand temperatures as low as to -20°F Mountains and Coastal.. Becoming a contributing member of Gardenia is easy and can be planted in moist to wet,! Azalea ( Rhododendron viscosum ) – a Hardy Sweet-Smelling azalea from strong winter winds higher! Delightful fragrance can be done in just a few minutes white to pink flowers that are white light... To leaf rust than other varieties white flowers appear in June and July after... A pink tinge and clove-like smell ( Michx. I love our native deciduous azaleas including., native plant gardens and open shade gardens atlanticum or coast azalea, swamp Honeysucle, Hammock azalea! It blooms in early summer and has a wonderful landscape plant that deserves a near. Florida and west to Texas 17 species of azalea which are native to the U.S by Thomas on. Good condition and doing well now color variations and color combinations naturally present in our azaleas!