Rhododendron arborescens, commonly known as sweet azalea (fragrant flowers), smooth azalea (glabrous twigs and leaves) or tree azalea (occasional tree-like height), is an upright, loosely-branched deciduous shrub that typically matures to 8-12’ (occasionally to 20’) tall. Rhododendrons are almost always evergreen with only a few exceptions. It is also one of the most widely grown. However, they take some extra care in order to thrive in Kansas. Follow the instructions on the fertilizer's label, except for the amount of fertilizer to apply. Create a membership account to save your garden designs and to view them on any device. Other HGIC fact sheets (HGIC 1058, Azalea Planting, and HGIC 1059, Azalea Care) cover azaleas in detail. Cultural requirements for rhododendrons and azaleas are basically the same, but their structures are somewhat different. The difference is minute, but it's one that has troubled some of the giants in the field of botany. Slightly fragrant, they blanket this midseason Knaphill hybrid in an exceptional floral display and contrast nicely with the handsome foliage of narrow green leaves which do not develop any appreciable fall color. It is also tolerant of heat and sun. Rhodies and Azaleas have shallow root systems and prefer a thin layer of mulch, under 1". Rhododendrons or Azaleas have beautiful showy flowers. Rhododendron is a genus of 500 to 900 species and includes both of what we commonly call rhododendrons and azaleas. Rhododendrons are not difficult to grow in South Carolina where the soil and environment are suitable for their culture. What about deciduous azaleas? Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. Encore azaleas were developed by Robert C. Buddy Lee, a plantsman from Independence, Louisiana. Borne at the tips of the upright branches, the blossoms gradually change to pink over time and contrast beautifully with the evergreen foliage of elliptic, glossy, olive green leaves. Rhododendron vs. Mountain Laurel ... Rhododendron is by far the larger genus contain ing hundreds of different species including azaleas. This will promote a more attractive, compact shape. At first glance, rhododendrons and azaleas seem to be nearly the same plant. The Catawba rhododendron variety (Rhododendron catawbiense) is a broadleaf, evergreen bush that has dark-green, leathery foliage, as well as spring flowers that are great for attracting hummingbirds. The stamens of a flower are those thin stems sticking out (they are male flower parts and produce pollen). across (5 cm), with long stamens that elegantly project themselves beyond the flowers. Rhododendrons are shrubs adorned with much larger and evergreen leaves with a distinct leathery texture. To discern the difference between azalea and rhododendron, know these key differences. Flowers can be white, lavender, rose, or red, a favorite of hummingbirds. In fall, its foliage turns from bright green to glowing orange and red, igniting the garden with color. Rhododendron and azalea species are found growing in the wild from the arctic region to the tropics. Azaleas and rhododendrons are native to Asia, Europe and North America and may be either deciduous or evergreen. Rhododendrons produce large, bell-shaped flowers in clusters whilst azaleas blooms are smaller and either tubular or funnel-shaped. The genus Rhododendron includes the shrubs commonly called rhododendrons and azaleas. Blooming in mid-spring, the blossoms appear before the foliage of shiny, dark green leaves emerge. Instead of having hair, most Rhododendrons are often scaly or have dots underneath the leaves. Our offerings of pale pink-bright red will make a drab shady spot a major focal point of your yard. Offering a ravishing display in mid to late spring, Rhododendron 'Nestucca' is a compact, evergreen shrub which produces incredibly beautiful domed-shaped clusters of 12 to 15 flowers. Prune azaleas and rhododendrons immediately after the bloom period is over (often in June in zone 5). Regions suitable for growing rhododendrons and azaleas are those that have naturally acidic soils, adequate water availability, moderate humidity and winds … This romantic and delicate planting includes mostly plants... Low maintenance and fairly easy to replicate, this planting... Providing months of fragrance and color, while being... Use our interactive toolsto design your dream garden. Additionally, both of these shrubs prefer filtered light or afternoon shade. Setting the garden ablaze, multiple award-winning Rhododendron 'Gibraltar' is a medium-sized deciduous azalea which produces incredibly eye-catching ball-shaped trusses of 10 to 12 flowers. To use the website as intended please  The best mulches for azaleas and rhododendrons are acidic mulches, such as pine straw (although the idea that pine needles make the ground more acidic is now disputed). In winter some stand out with large evergreen leaves. In either case, water well after planting azaleas and rhododendrons. Encore azaleas are a series of hybrids developed to be true multi-season bloomers-blooming in Spring, Summer, and Fall. These shrubs prefer climates with adequate rainfall and moist summers. Leaves tend to be thin and soft, often hairy, Evergreen Azaleas generally have 1 to 3 flowers at the end of each stem, Evergreen species have large, thick, leathery leaves, Some species may have small dots, called scales, on the undersides of their leaves, Flowers typically have 10 or more stamens, Flowers are often grouped in large clusters called "trusses". Finally, unlike rhododendrons, many azalea plants are deciduous. wide (7 cm), delicately freckled with reddish brown on their upper lobes. Most are evergreen but some are deciduous. Overly alkaline soil can be corrected by applying fertilizers listed as being for "acid-loving" plants. Catawba rhododendron bushes can reach a height of 6 to 8 feet with a spread of 4 to 6 feet. Why some get a common name (like Azalea) and some still go by the species name (Rhododendron), … Azaleas are frequently used around foundations and occasionally as hedges, and many larger-leafed rhododendrons lend themselves well to more informal plantings and … Regarded as one of the most popular red rhododendron for severe climates. All in all, the azaleas and rhododendron plants differ in the following areas: 1. Azalea refers to the native species of the Rhododendron shrub that is deciduous. Rhododendron 'Karens' Slightly fragrant and exceptionally cold hardy, Rhododendron 'Karens' is a very eye-catching, dense and compact, semi-evergreen Azalea. Rhododendrons or Azaleas have beautiful showy flowers. Early history. Because these shrubs like acid soil and have shallow roots, a compatible shade tree should not mind acid soil and should not have shallow roots. Sun and heat tolerant, this compact evergreen rhododendron is also extremely cold hardy and a very reliable performer. Al… Check these Great Plant Combination Rhododendron x 'Haaga' (H-1) Sku #1801. We use cookies on this website, you can read about them here. Extremely winter hardy, Rhododendron 'Girard's Fuchsia' is an outstanding, medium-sized semi-evergreen azalea producing masses of large, broadly funnel-shaped flowers, with slightly wavy edges, in the most vibrant fuchsia purple shades with deeper spotting in the throat and purplish-pink reverses. They were the result of Mr. Lees planned cross hybridization between the a series of azaleas and Rhododendron oldhamii Fourth of July. As the leaves emerge in mid spring, abundant ball-shaped clusters of 8 funnel-shaped white flowers, up to 1 in. Grow it in zones 4 to 8. Any Rhododendron or Azalea prefers well-drained soil with an acidic pH. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas. 2. The types of leaves – azalea leaves tend to be small, thin, soft, and elliptically shaped. In spring the flowers are showy; throughout the summer and fall the leaves add a pleasing, deep green color to the garden. 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. While every effort has been made to describe these plants accurately, please keep in mind that Azaleas and Rhododendrons: What is the Difference? Learn about some of the best choices and how to grow them. Rhododendron prinophyllum (Roseshell Azalea) Prized for its delightful fragrance and stunning floral display, Rhododendron prinophyllum (Roseshell Azalea) is a vigorous and showy deciduous Azalea. At first glance, rhododendrons and azaleas seem to be nearly the same plant. They originate mostly from the Northern Hemisphere with high concentrations in western China, the Himalayas and Myanmar (Burma). P.J.M. The leaves of this bush are evergreen. It never fails to provide a splendid display when massed in shrub borders. has been written based on numerous outside resources. Most are evergreen but some are deciduous. Consequently, the taxonomy has been historically complex.. When choosing ornamental shrubbery for your Mediterranean landscape, the colorful blooms of rhododendron and hydrangea are hard to ignore. Both leaves and branches often appear in whorls. An … Rhododendron or azalea especially valuable to you can be protected with a mesh enclosure filled with oak leaves, or with a teepee-like structure constructed using three or four evergreen branches with the points forced into the ground and other ends tied together, or by snow fencing alone or with a polyethylene plastic sheeting attached to it. All evergreen species originally came from Asia and generally tend to be hardy only to Zone 6. Flowering is so prodigious that they literally smother this midseason rhododendron in an exceptional floral display. Rhododendron vs. Mountain Laurel ... Rhododendron is by far the larger genus contain ing hundreds of different species including azaleas. Begin by pruning off dead or injured branches, which could cause disease and insect problems in the future. Equally attractive, the foliage of obovate, pale green leaves, flushed with pinkish bronze, is borne in handsome whorls at the branch ends. A splendid border shrub that is native to the southern Blue Ridge Mountains. Vivid, glossy silver and dark green variegated foliage supplies the color the rest of the year. The color of the flowers – azaleas have a much larger color palette than rhododendrons. They are famous for the expanse of their leaves and their exotic flowers. This very hardy azalea was developed by plantsman Mike Farrow of Maryland. The Stewartstonian azalea (Rhododendron x Gable Stewartstonian) has red flowers. So if you read the botanical name of a common azalea on a plant label at the nursery, you will likely see the word, "Rhododendron.". Valued for its luminous flowers and showy fall color, multiple award-winning Rhododendron 'Homebush' is a small deciduous shrub which produces dense, perfectly round trusses of 14 to 16 rose-pink flowers with long stamens elegantly protruding from the corolla. All azaleas belong to the Rhododendron genus, but not all Rhododendrons are azaleas. They are not confined to the east but are found along the west coast as well as into the Rocky Mountain areas. Opening from pink buds in late spring to early summer, the highly fragrant blossoms contrast beautifully with the handsome foliage of bluish-green leaves. Within the rhododendrons, themselves, leaf-size comparisons are used to make a further division between large-leaf and small-leaf types. Also, azalea flowers usually have five stamens, while the rhododendron flowers have ten. Azaleas and rhododendrons are not desert plants; they like water. The description of these plants Azaleas usually have 5 stamens per lobe, and have 5 lobes in a flower. P.J.M. Azaleas can be white, pink, red, lavender, purple, yellow, and orange while rhododendrons tend to be white, red, purple, orchid pink, and only sometimes yellow. Azaleas, Camellias, & Rhododendrons General Information: Prized as ornamental shrubs the world over, rhododendrons are renowned for their dramatic flower trusses, azaleas for their vibrant displays of color, and camellias for their perfectly formed, iridescent blossoms.In addition to their blossoms, all offer variety in shape and size and versatility in the landscape. Their stamens elegantly protrude from the corolla and can be almost 3 times as long. The roots of these shallow-rooted plants need the protection that mulch gives against extremes of heat and cold (and against drying out). A few shade trees are compatible with azaleas and rhododendrons, most notably the red oak (Quercus rubra). Botanically, azaleas are members of theEricaceae (Heath) family, which includes blueberries and mountain laurel. Well, the difference is minute and understandable since azalea plants and rhododendrons are related. Ideas with Rhododendrons - Azaleas, Extend the Blooming Season of your Azaleas and Rhododendrons, Choosing Perfect Azaleas and Rhododendrons, Beautiful Azaleas and Rhododendrons for the Pacific Northwest Region, Beautiful Azaleas and Rhododendrons for the Midwest, A Spectacular Spring Border Idea with Brilliant Tulips and Cotinus, An Exquisite Spring Border Idea with Sawara Cypress, Tulips and Muscari, A Romantic Spring Garden Idea with Peonies, Irises and Flower Bulbs, An Eye-Catching Winter Border Idea with Colorful Twigs and Cyclamens, A Spectacular Spring Border Idea with Scarlet Tulips and Cotinus, Azaleas - Rhododendrons, Rhododendrons - Azaleas. Rhododendron and Azalea Trouble-free color for decades. One of the latest native azaleas to bloom, Rhododendron prunifolium (Plumleaf Azalea), is a large, graceful shrub that sets the garden ablaze in mid to late summer. Opening from pink flower buds in mid to late spring, each soft pink trumpet-shaped flower, 2.5 in. Rhododendrons and Azaleas are some of the easiest, most rewarding flowering shrubs you'll find for the sunny to partly shaded garden. However, laurel's cultural needs are more finite --- moist, acidic soil rich in humus and partial shade. How to tell the difference between azaleas and rhododendrons? The evergreen foliage of elliptic, glossy, thick and dark green leaves does not develop any appreciable fall color. Its deciduous foliage of ovate to elliptic mid-green, softly hairy leaves, sometimes turns a muted yellow in fall. wide (2.5 cm), tinged with soft apricot, appear at the branch tips, adding elegance and beauty to this early midseason Azalea. Compact and luminous, Rhododendron 'Goldkrone' is a lovely evergreen shrub producing eye-catching trusses of 16 to 18 light golden-yellow, trumpet-shaped flowers, up to 2.5 in. Apply an organic mulch to protect its shallow roots from water loss and extremes in soil temperature. A durable yet charming rhododendron with small trusses of bright lavender-purple blooms that contrast with the small, dark green leaves. Blooming in mid to late spring, each trumpet-shaped flower is delicately splashed with deep maroon blotches on their upper lobes. Need to dress up a shady spot? A terrific choice when a small accent plant with great presence is needed. rhododendron’s overall size is also smaller, as it reaches about 4 feet by 4 feet at maturity. It is a good choice for foundation plantings and large rock gardens. Blooming in late spring to early summer, the blossoms of this midseason rhododendron contrast beautifully with the handsome foliage of ovate, slightly curled, dark green leaves. The Pacific Northwest naturally has soil with low pH because of copious rain, but much of the area has heavy clay soil, so mixing compost to the bed before planting is advised. Developed by Joseph Gable of Stewartstown, Pennsylvania, this is another bush with green summer foliage that yields to a mahogany color in winter, making it an ideal choice for four-season interest. An extremely hardy selection which never fails to provide a splendid display when massed in shrub borders. If your land lacks good drainage, try planting azaleas and rhododendrons in raised garden beds. Each slightly fragrant bloom features inconspicuous golden green blotches that age to reddish-brown. In general, the common name azalea is given to those shrubs with deciduous leaves and funnel-shaped flowers. Cookies, This site is protected by reCAPTCHA and the Google, Rhododendron calendulaceum (Flame Azalea), Rhododendron prunifolium (Plumleaf Azalea), Rhododendron schlippenbachii (Royal Azalea), Great Plant Combination Ideas The huge clusters of bright, colorful flowers bloom heavily for weeks with virtually no effort from you. In spring the flowers are showy; throughout the summer and fall the leaves add a pleasing, deep green color to the garden. rhododendron (Rhododendron x P.J.M.) There is a difference between azaleas and rhododendrons, although what the two share dwarfs what separates them, including a preference for well-drained, acidic soil. , acidic soil rich in humus and partial shade compatible with azaleas - rhododendrons, part of care! Winter some stand out with large evergreen leaves, part of the smaller azalea are usually pointed narrow. Selection which is also a pollution-tolerant tree, an important factor in and... 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Great a nectar source for swallowtail butterflies and hummingbirds, unlike rhododendrons, many azalea plants, to..., water well after planting azaleas and rhododendrons. color palette than rhododendrons. a garden writer with nearly years... Very eye-catching, dense and compact, semi-evergreen azalea. `` make the distinction referring. Extra care in order to thrive in Kansas the west coast as as... Are tubular-, funnel-, or red, funnel-shaped flowers, up to in! Mountain areas of proper care for azalea bushes and rhododendrons. came from Asia and generally tend to in! Waterer, this late midseason rhododendron cover the shrub in an exceptional display. Muted yellow in a flower are those thin stems sticking out ( they are famous the.

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