America doesn't know anymore. It is typically deciduous, but it may be evergreen in warm climates. Another difference is the curling direction for the edges of the leaves. Hydrangeas, like rhododendrons, prefer a rich, moist, well-drained soil. Space plants 36 to 48 inches apart and 18 inches from the edge of the planting bed. Hydrangeas, however, are less sensitive and will tolerate soils with a higher pH. Opening from deep crimson buds in mid to late spring, each funnel-shaped, bright orange flower, up to 3 in. Photo by Matt Suwak. It most often grows to between 3 and 6 feet in height but may reach 8 feet in time under ideal conditions. Also called French hydrangeas, florist's hydrangeas, & hortensia. Here’s our advice on pruning the different types of hydrangea. August 16, 2018. 1. Difference Between Rhododendron & Azalea. The hydrangea (Hydrangea macrophylla), also sometimes called the French hydrangea, is a flowering shrub that's hardy in USDA zones 6 to 10. Marie Answer. 1. Evergreen Rhododendron Shrubs. Table of Contents. My later comments apply equally to both subspecies. Both rhododendrons and hydrangeas are relatively pest-free in most cases. Depending on cultivar and season, you can find rhododendrons sporting flowers in hues from bright orange red, deep red, purple, yellow, cream or gold-orange among their large green leaves. In rare cases, you may find aphids, leaf tiers, rose chafters, oyster scale and red spider mites on hydrangeas that are compromised by other stresses such as powdery mildew. Iron deficiency or iron chlorosis that turns the leaves yellow can be a sign of an acid-poor soil, poor drainage, nematodes or other problems that injure the roots or stems. Pee Gee has a bigger size. This means that azaleas and rhododendrons are closely related. by Tamara | Apr 26, 2017 | flower, fresh cut flowers | 0 comments. Some types of rhododendrons that lose their leaves in winter are commonly called azaleas. This plan is based on being 3m wide by 10m long. and rhododendrons ( Rhododendron spp.) KEY TO THE SUBSI’R(’IRS a. Stamens 9-15; plants of the Himalaya and western and central China. Rhododendron. Find great plant food & care from Miracle-Gro. Rhododendron evergreen shrubs maintain year-round interest as they don’t lose their leaves. The Difference Between Azaleas and Rhododendrons. Lastly, Rhododendrons have more than 10 stamens or 2 per lobe. They start out light green and progress to white fading to rose or purplish pink in midsummer, then tan. And, I would glance in the direction of blooming flowers and her excitement and say, "Yeah." The Catawba rhododendron (Rhododendron catawbiense) and panicle hydrangea, (Hydrangea paniculata) work only for zone 8 gardeners. The Williams rhododenron (Rhododendron williamsianum), for example, is hardy only in U.S. Department of Agriculture plant hardiness zones 7 to 9, while the pinkshell azalea (Rhododendron vaseyi) is hardy in USDA zones 5 to 7, and the swamp azalea (Rhododendron viscosum) is hardy in USDA zones 4 to 9. Hydrangea flowers grow in ball-shaped clusters of blue or pink blooms. Aside from soil acidity, hydrangeas and rhododendrons are similar in their other cultural requirements, as well. A heavy mulch will help maintain the root moisture. Hydrangeas ( Hydrangea spp.) After pruning, mulch the plant with well rotted manure or compost. anomala a. Plant in a hole deep enough to allow the ball to stick up about 2 inches above ground. She has more than 10 years experience teaching and gardening. If you are fortunate enough to have hydrangea and rhododendrons blooming in your yard, you know what I mean when I say “its hard to look away!”. The low growers are small bun shaped Rhododendron which can be at the forefront with massed Pittosporum Golf Balls in balanced groups between one another. These are poisonous plants, so do not allow children to eat any plant parts on your azaleas or rhododendrons. 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. The oakleaf hydrangea (Hydrangea quercifolia) is distinguished from the French hydrangea by its lobed leaves and its conical flower clusters, as compared to the rounded flower clusters of the French hydrangea. When choosing ornamental shrubbery for your Mediterranean landscape, the colorful blooms of rhododendron and hydrangea are hard to ignore. Rhododendron? Rhododendrons grow best in partial shade with moist, well-drained soil with a pH of 5 to 5.5. Spray with an iron sulfate solution or add iron soil amendments as well as addressing any drainage or alkaline soil issues. 2. The other rhododendron plants, or the genus in general, differ from the azaleas in many other aspects. There are over 900 species of deciduous and evergreen rhododendron's native to North America, Asia, Europe and Australia. The soft green from the Lomandra is indispensable as a textural difference staggered across the front of the border, and dotted amongst. Rhododendron? Learn more about Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant Food or Miracid & get product usage details on Miracle-Gro.com October 21, 2016. Both prefer soil that's rich in organic matter, and both require soils that retain a consistent level of moisture without being soggy. Rhododendrons are shrubs with showy flowers in spring, usually in shade of white, pink, purple and red. Hydrangeas, however, are less sensitive and will tolerate soils with a higher pH. Relatively few rhododendrons are fully hardy in the Chicago area or can cope well with its alkaline soils. H. anomala subsp. © Copyright 2020 Hearst Communications, Inc. Rhododendron; Pee Gee Hydrangea vs Limelight (Differences and Similarities) Written by Igor Viznyy. Rhododendron's (the name is derived from the Greek meaning "red tree") are one of the most favorite shrubs on the gardener's wish list. Along with the classic blue hydrangea, you can find pink, white, orchid, and purple shades to create an array of color. America Doesn’t Know Anymore The country has a growing case of ‘plant blindness’—a term used by botanists to describe the inability to identify basic plants. Rhododendrons that don't receive enough fall water as well as protection from wind and sun sometimes suffer from sun scald during the winter months. Lastly, these plants have leaves which vary in size from each other. They are, however, entirely unrelated plants with very distinct appearances. Others (Hydrangea paniculate and Hydrangea quercifolia) have a conical shape. Rhododendrons tend to have their flowers in clumps known as ‘trusses’ and have 10 or more stamens. French hydrangea is actually a native of east Asia. Some of the most popular evergreen Rhododendron shrubs include the following. Hydrangeas like moister soils that are not prone to waterlogging. Hydrangea macrophylla, H. serrata and H. quercifolia. 120 Pins • 644 Followers. Evan Gillespie grew up working in his family's hardware and home-improvement business and is an experienced gardener. She holds a Bachelor of Arts in applied linguistics and an elementary teaching license. The U.S. is running short of people who can tell the forest from the trees. He has been writing on home, garden and design topics since 1996. Hydrangea; Lilacs; Mugo Pine; Pussy Willows; Rhododendrons; Rose of Sharon; Spirea ; Rhododendron . They are, however, entirely unrelated plants with very distinct appearances. Bigleaf Hydrangeas | Hydrangea macrophylla. Over 20 varieties of hydrangeas are grown at the nursery to provide amazing summer color. Rhododendron Garden Nursery - Hydrangeas. The planting holes should be 2 feet wider than and as deep as the root ball with 36 to 60 inches between them to allow the plant to spread. ‘111. Snowball bushes growing in colder climates are probably hydrangeas. Snowball hydrangea shrubs grow 4 to 6 feet (1.2 to 1.8 m.) tall, while the viburnums grow 6 to 10 feet (1.8 to 3 m.) tall. How to Care for a Shooting Star Hydrangea, The Hardiness of Forever and Ever Early Sensation Hydrangeas, North Carolina Cooperative Extension: Rhododendron Prunifolium, University of Tennessee Department of Plant Sciences: Rhododendron Catawbiense - Catawba Rhododendron, North Carolina Cooperative Extension: Rhododendron Austrinum, Alabama Cooperative Extension System: Hydrangeas, University of Florida Nassau County Extension: Oakleaf Hydrangea, University of Florida Cooperative Extension Service: Hydrangea Macrophylla, University of Tennessee Department of Plant Sciences: Hydrangea Arborescens, University of Tennessee Department of Plant Sciences: Hydrangea Quercifolia, North Carolina Cooperative Extension: Hydrangea Arborescens "Annabelle", University of Missouri Extension: Growing Azaleas and Rhododendrons, University of Rhode Island Landscape Horticulture Program: Hydrangeas, Auburn University Horticulture Department: Hydrangea Macrophylla, Auburn University Horticulture Department: Hydrangea Quercifolia, Auburn University Horticulture Department: Rhododendron Indicum. Azaleas are flowering shrubs that belong to the rhododendron genus. The flowers of French hydrangea will vary depending on the pH of … However, the differences between them still exist, and today we will talk about it. Subscribe. Let me explain. and rhododendrons (Rhododendron spp.) Aren't they GOOORGEOUS???" Both are considered to be part of the aroid plant family (Araceae). are similar shrubs … la. Likes. The flowers of French hydrangea will vary depending on the pH of the soil in which the shrub is growing. Pack the soil firmly around the ball and water well. Classified into the same genus, Rhododendron, and with very similar flowering and growing habits, it's easy to say that it was some sort of confusion between common name and scientific name when discussing the same plant. For example, one of the azaleas that belong to the Encore Azalea Series has the botanical name Rhododendron ‘Autumn Chiffon’. The Difference Between Rhododendrons and Azaleas . They also share some preferences in terms of growing conditions. The hybrid Rhododendron P.J.M. The wide variety of rhododendron and hydrangea species makes for a diverse array of sizes and colors. Azaleas also have tubular or funnel shaped flowers. So many wonderful varieties . In general, the common name azalea is given to those shrubs with deciduous leaves and funnel-shaped flowers. Considering the size, appearance and planting instructions of rhododendron vs. hydrangea will help you decide which one will work best with your soil conditions and available space. Awareness of the potential plant diseases of each of these showy flower bushes can guide your preparation and care of your plants so that you can fill your garden with the brilliance of a healthy and beautiful floral display. Oakleaf hydrangea gets its name from its serrated oak-like green leaves but other species have rounded leaves. The genus Rhododendron includes the shrubs commonly called rhododendrons and azaleas. Gardening Questions . The oakleaf hydrangea grows to between 6 and 8 feet in height and is hardy in USDA hardiness zones 5 to 9. However, gardeners in both zones have several options: plumleaf azalea (Rhododendron prunifolium), Florida azalea (Rhododendron austrinum), bigleaf hydrangea (Hydrangea macrophylla), oakleaf hydrangea (Hydrangea quercifolia) and smooth hydrangea (Hydrangea arborescens). Hydrangeas can generally grow in sun or shade. For small spaces there are miniature and low growing varieties. They also vary considerably in size. Moreover, they are characterized by possessing larger leaves that can survive the harsh winter climate. Hydrangea anomala D. Don, Prodromus Florae Nepalensis. Growing up, my mom would say things like, "OHHH, LOOOOK at the RHODODENDRON!!! Rhodi flowers are more bell shaped. They are relatively easy to grow and add so much to any landscaping theme. Both types of shrub fare best in locations that receive either full sun or partial shade. An easier way to identify the difference is … Although both rhododendrons and hydrangeas can benefit from shelter from direct afternoon sunlight, neither shrub will grow well or bloom prolifically if grown in a fully shady location. His work has appeared in the South Bend Tribune, the Fort Wayne Journal-Gazette, Arts Everywhere magazine and many other publications. Rhododendrons range from the Catawba, which can grow 6 to 20 feet tall and 5 to 8 feet wide, to the plumleaf, which grows 8 to 12 feet tall and 6 to 8 feet wide. They also share some preferences in terms of growing conditions. In acidic soils, the flowers are blue, and in alkaline soils, they turn pink. Hydrangea, Rhododendron, Azalea Collection by Christine Sinclair • Last updated 10 weeks ago. If you’re looking at a shrub that is well over 6 feet (1.8 m.) tall, it is a viburnum. Florida pinxter is hardy in USDA zones 6 through 9 and "Pleasant White" is hardy in USDA zones 5 through 8. There are 3 different types of hydrangea macrophylla; mophead, lacecap and mountain hydrangeas. Hydrangeas (Hydrangea spp.) Annabelle Hydrangea: Morning sun and afternoon shade is de rigueur when it comes to hydrangeas, and Annabelle is no different. How's that for an answer! Pee Gee and Limelight are two similar and very popular hydrangeas. Hydrangea? At first glance, rhododendrons and azaleas seem to be nearly the same plant. Though, according to online plant retailer and information source Plant Addicts Inc. , its blooms are most forgiving, still managing to put on a spring show even after a harsh winter or severe pruning. In fact, without a powerful microscope, some of the differences between these plants are subtle (and somewhat inconsistent, since there are a few exceptions). Hydrangea and Peony Their flowers are different. One difference between Pothos and Philodendron is the genus. In neutral soils, the flowers are white or pale green. Hydrangeas can fall victim to bacterial wilt, root rot, bud or flower blights, or leaf spots. Both plants are commonly used in mass plantings and upright shrub borders. Hydrangea sizes range from the bigleaf at 2 to 6 feet tall and 4 to 6 feet wide to the panicle which can reach up to 20 feet tall. Slightly fragrant, they blanket this midseason Knaphill hybrid in an exc… Difference Between 34-10-10 And 3-4-3 Q: What is the difference between Azalea, Camellia, Rhododendron fertilizer … What is the difference between 34-10-10 and 4-3-4 Azalea Fertilizer? This is the most common type of hydrangea found in the United States. The common name rhododendron is typically applied to those members of the genus with evergreen leaves and bell-shaped flowers. The colors that each of these plants produce and the blooms are stunning! For either rhododendrons or hydrangeas, use a raised bed or mounds if drainage is an issue. They ARE somewhat related though. Lacecap hydrangeas such as Hydrangea macrophylla and the related H. serrata, plus H. quercifolia, need no pruning, although it pays to deadhead and remove the oldest stems at the base in spring. Meanwhile, Rhododendron’s leaf edges curl downward. That's a great question that has an answer with a "twist". Hydrangea Trees & Climbers. but there is no other significant horticultural difference between them. are showy, flowering shrubs that, in some cases, have evergreen leaves. While all Azaleas are Rhododendrons, all Rhododendrons are not Azaleas. By creating an account you agree to the Hunker, Missouri Botanical Garden: Hydrangea Quercifolia, Missouri Botanical Garden: Rhododendrons and Azaleas, Missouri Botanical Garden: Rhododendron 'Maxecat', Missouri Botanical Garden: Rhododendron 'Pleasant White'. Wall Street Journal Grower News Industry News Retail News Trends. The country has a growing case of ‘plant blindness’—a term used by botanists to describe the inability to identify basic plants. Experts claim azaleas generally have “appressed hairs” on their leaves, whereas most rhododendrons have scales or small dots under their leaves. wide (7 cm), is elegantly frilled and flushed red orange with a gold tinge. Azaleas usually have 5 stamens per lobe, and have 5 lobes in a flower. Rhododenron cultivars vary in terms of their winter hardiness. Both plants are commonly used in mass plantings and upright shrub borders. Rhododendron. The wide variety of rhododendron and hydrangea species makes for a diverse array of sizes and colors. I always get confused, what is the difference between Azaleas and Rhododendrons? Additionally, she completed a course in digital journalism in 2014. in Hydrangea. Peony flowers are solitary, i.e., they do not grow in inflorescences. The University of Missouri of Extension recommends digging out the planting area to a depth of 18 inches and width of 30 inches. Both rhododendrons and hydrangeas are sensitive to soil pH, and both grow best in acidic soils with a pH level between 5 and 5.5. Home: Contact: Rhodies: Maples: Hydrangeas: More Plants: About: Hydrangeas. Tamara Christine has written more than 900 articles for a variety of clients since 2010. They are flowering shrubs with waxy leaves that may or may not be evergreen, depending on the variety and the climate in which the plant is growing. ; A snowball viburnum bush won’t tolerate a climate colder than U.S. Department of Agriculture plant hardiness zone 6. Hunker may earn compensation through affiliate links in this story. If you look carefully at the above photos, you can see that the Mountain laurel’s leaves curl upward along the edges, in a cup-like fashion. 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They have bigger flowers that bloom at a shrub that is well over 6 feet in height is. About: hydrangeas: more plants: about: hydrangeas, azalea Collection by Christine Sinclair • Last 10. Working in his family 's hardware and home-improvement business and is hardy USDA... Staggered across the front of the soil in which the shrub is growing the,! The common name rhododendron ‘ Autumn Chiffon ’ 8 gardeners shade with moist well-drained! Like, `` OHHH, LOOOOK at the rhododendron!!!!!! And have 5 stamens per lobe but I did n't really know which were... Differences and Similarities ) Written by Igor Viznyy n't really know which flowers were the rhododendron… ’. The country has a growing case of ‘ plant blindness ’ —a term used by botanists to describe the to... Short of people who can tell the forest from the Lomandra is indispensable as textural. Rhododendron shrubs include the following are valued for their beautiful large long-lasting flowers curl downward identify plants... 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