Rhodora (R. canadense), from northeastern North America, bears rose-purple flowers before the leaves unfurl. Zones 4-8. Zones 6-9. They occur as native plants in Southeast Asia, North America, and in tropical climates from India to Australia. Staying atop of your wellbeing is a must, especially during uncertain, stressful times. Plant breeding continues to improve the adaptability of such exotic plants, but the more closely the new habitat resembles the…, >rhododendron order of flowering plants, containing 25 families, 346 genera, and more than 11,000 species.…. "Azaleas" are what people tend to associate with deciduous rhododendrons, and generally have smaller leaves and shorter plant habits. Zones 6-9, Rhododendron 'Blue Diamond' is a dwarf evergreen rhododendron that bears violet-blue flowers. BH&G is part of the Meredith Home Group. Rhododendron yedoense poukhanense bears lilac to deep-rose funnel-shaped flowers in spring. Blooming in mid-spring, the blossoms appear before the foliage of shiny, dark green leaves emerge. With just two weeks until turkey day, the latest information could affect your plans. All Rights Reserved. The result is this incredibly popular plant that has been the recipient of the Rhododendron of the Year Award from the American Rhododendron Society. Rhododendron 'Hydon Dawn' is one of the few rhododendrons that tolerates full sun. It can be found in the mountains, coniferous and temperate forests and tropical rainforests. Rhododendrons and azaleas are acid-loving, woody shrubs with colorful flower clusters. Rhododendron 'Hino Crimson' is a dwarf, densely growing azalea that produces bright red flowers. They are great for landscaping and produce beautiful flowers in the spring and summer. It grows 6 feet tall and wide. Finding the right balance of moisture in soils can be tricky. Rhododendrons belong to the Ericaceae (or heath) family. Credit: Updates? This genus contains more than 1,000 species of woody plants. By far, the largest number of wild species rhododendrons are native to Asia. The first species available for garden use, in the mid-1600s, was R. hirsutum, the hairy alpine rose, which may grow as high as 1 metre (3 feet). 19 Vintage Christmas Decor Ideas That Are Giving Us Major Holiday Nostalgia, 23 of Our Test Kitchen's Best Cookie Recipes of All Time, Conquer Holiday Cooking with This Meat Roasting Guide, The CDC Just Updated Its Thanksgiving Safety Guidelines—Here's What You Need To Know, 5 Simple Ways to Prepare Your Garden for Winter, 21 Essential Baking Tools Every Home Cook Needs (Plus 16 That Are Nice to Have), 9 Ways to Decorate Your Front Door for the Holidays, What Style Is Your House? Rhododendron is a flowering plant. A deciduous type azalea, it features bright orange blooms in spring on naked stems before the foliage emerges. Rhododendrons are native chiefly in the North Temperate Zone, especially in the moist acid soil of the Himalayas and into Southeast Asia to the mountains of New Guinea. With so many types of house styles, narrowing the list down to your favorite can be overwhelming. The leaves of the smaller azalea are usually pointed and narrow; the leaves of the rhododendron are generally large and leathery. After the plants have bloomed, spent blossoms can be cut back to the new growing tips. Rhododendron leaf spot is a disease that produces small to large brown spots on rhododendron leaves. Despite the greek designation as a tree, rhododendrons are actually shrubs. What Are Rhododendrons? Rhododendron, meaning “red tree,” refers to the red flowers and woody growth of some species, but rhododendrons range in habit from evergreen to deciduous and from low-growing ground covers to tall trees. But azaleas and rhododendrons also are among the touchier plants to grow. Zones 5-8. One of the first and most beautiful spring-flowering native azaleas to bloom, Rhododendron vaseyi (Pink-Shell Azalea) is a deciduous, irregular rounded shrub which features trusses of 4 to 8 delicate pink to white, flat-faced flowers on leafless stems, with some prominent spotting in their throat. The exposed trunks should face the north or east, or be protected from the sun by buildings or other plants. It has a low, compact habit to 5 feet tall and wide and bears clusters of small, clear pink flowers that fade to white. While most garden beds focus on flowers, this mixed border emphasizes foliage plants of varying heights and textures, and throws flowers in for interest. Azaleas are in the genus Rhododendron. Some of the most common dangers to your rhododendron include aphids, root rot and Japanese beetles. Pruning may be necessary to create a more desirable shape and overall more visually appealing plant. Homemade cookies are always a welcome treat. Being popular shrubs in many landscapes, the topic of how to trim a rhododendron bush, including wild varieties like mountain laurel, is a frequently asked question. It grows 4-6 feet tall and wide. There is not a definitive way to tell the difference, however here are some characteristics to be able to tell the difference. We'll show you the top 10 most popular house styles, including Cape Cod, country French, Colonial, Victorian, Tudor, Craftsman, cottage, Mediterranean, ranch, and contemporary. It grows 5 to 10 feet tall and wide. It may be evergreen or deciduous. Zones 7-9. Zones 4-9. While shrubby brethren like spireas, panicle hydrangeas, and abelias will tolerate a … Others range from matlike dwarf species only 10 cm (4 inches) high (R. prostratum, from Yunnan, China) to trees in excess of 12 metres (R. arboreum, R. barbatum, and R. giganteum, from Asia). Zones 7-9. It grows 5 feet tall and wide. Rhododendron also appreciates soil that has lots of organic material. Zones 6-9. Rhododendron 'Trude Webster' forms a compact, upright plant with clustered, clear pink flowers. Unfortunately, the lovely plant is prone to disease and pests. Related: How Fast Do Encore Azaleas Grow? After bloom is also the ideal time to do any other pruning. A colorful alternative to the standard all-green landscape, this foundation planting mixes broad-leafed evergreen shrubs and a sculptural tree with flowering perennials and groundcovers. Damaged or diseased growth should always be removed to prevent the spread of disease. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Zones 7-9. Many of the deciduous types also boast bright yellow and orange hues that work wonders in brightening up shady corners of the garden. Zones 7-9, A series of semi-evergreen azaleas that feature a re-blooming habit for season long color. Rhododendron definition, any evergreen or deciduous shrub or tree belonging to the genus Rhododendron, of the heath family, having rounded clusters of showy, pink, purple, or white flowers and oval or oblong leaves. Proper soil preparation is also necessary for the health of this acid loving plant. Growing rhododendron successfully requires the proper planting spot for the rhododendron bush. Hood Scenic Byway on a 19th-century pioneer wagon route, Rhododendron nestles into the western flank of the craggy peak. Rhododendron 'Capistrano' is a compact, mounding selection, growing to 4 feet tall and wide, bearing trusses of frilled greenish-yellow flowers. Omissions? It grows to 4 feet tall and wide. If you’re a beginner baker who’s just starting out (or a master chef looking to declutter), start with this list of baking tool must-haves. Available in a wide variety of colors, the most common flowers are borne in ranges of purples and pinks as well as white and cream. After the hole is completed put the plant in the hole and back-fill it with a mixture of peat, soil and other amendments. Rhododendrons pruned in this way exhibit an unbroken bank of foliage or bloom when viewed from one side and a wooded-dell effect from the other. They're essential to holidays and casual gatherings. There are over 800 species of rhododendrons ranging from spreading groundcovers a few inches high to 100 foot tall trees and many thousands of registered, named varieties. Rhododendron grows in cool climate, on slightly acidic, well-drained soil. Leaves are thick and leathery and are evergreen in all but the azalea species, some of which are deciduous. Zones 5-9. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Leaf spot can be caused by a number of reasons, including chemical burns, fungi and viral infections. See how you can personalize your home's entrance with holiday front door decorations, including evergreen wreaths, garlands, pinecones, and pops of plaid. The underside of the leaves may be scaly and may have small dots. These are poisonous plants, so do not allow children to eat any plant parts on your azaleas or rhododendrons. This article was most recently revised and updated by, https://www.britannica.com/plant/rhododendron, North Carolina State University - Rhododendron, The Spruce - Varieties of Azaleas and Rhododendrons, rhododendron - Children's Encyclopedia (Ages 8-11), rhododendron - Student Encyclopedia (Ages 11 and up). In fall, leaves change to a gold or reddish purple. See more. Rhododendron is a flowering plant that belongs to the heath family. Rhododendron plants, similar to many other plants in the Ericaceae family, prefer acidic soils. Rhododendrons are lovely plants with enchanting blooms that range from dark red to lavender. Corrections? With easy access to outdoor pursuits year-round, Rhododendron exudes the warmth of a friendly alpine town. Rhododendron 'Gibraltar' grows vigorously to 5 feet tall and wide, bearing bright orange flowers. Depending on what's growing in your garden, there's a lot you can do to get your ornamental plants ready for the colder months. These often-broadleaf evergreen plants boast large clusters of showy blooms at their growing tips in spring. It grows 3 feet tall and wide. Rusty-leaved rhododendron is a shrub found in mountainous regions of Europe. Rhododendron 'Cecile' grows vigorously to become a dense, 7-foot-tall and 7-foot-wide shrub with trusses of large, salmon-pink flowers. Zones 5-8. It grows 2 feet tall and wide. It grows 2-3 feet tall and wide. Things to Do in Rhododendron, Clackamas County: See Tripadvisor's 1,742 traveler reviews and photos of Rhododendron tourist attractions. 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