But I didn't really know which flowers were the rhododendron… She holds a Bachelor of Arts in applied linguistics and an elementary teaching license. Hydrangeas, however, are less sensitive and will tolerate soils with a higher pH. Hydrangea and Rhododendron: How to Care for Your Plants. by Tamara | Apr 26, 2017 | flower, fresh cut flowers | 0 comments. wide (7 cm), is elegantly frilled and flushed red orange with a gold tinge. ; A snowball viburnum bush won’t tolerate a climate colder than U.S. Department of Agriculture plant hardiness zone 6. The colors that each of these plants produce and the blooms are stunning! America doesn't know anymore. Rhodi flowers are more bell shaped. Experts claim azaleas generally have “appressed hairs” on their leaves, whereas most rhododendrons have scales or small dots under their leaves. An easy way to tell the difference between Pothos and Philodendron is the … Relatively few rhododendrons are fully hardy in the Chicago area or can cope well with its alkaline soils. ‘111. Quite often, they are even difficult to distinguish. They also share some preferences in terms of growing conditions. 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'. They start out light green and progress to white fading to rose or purplish pink in midsummer, then tan. 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. Photo by Matt Suwak. Oakleaf hydrangea gets its name from its serrated oak-like green leaves but other species have rounded leaves. Also called French hydrangeas, florist's hydrangeas, & hortensia. The U.S. is running short of people who can tell the forest from the trees. This is the most common type of hydrangea found in the United States. Find great plant food & care from Miracle-Gro. Rhododendron. For small spaces there are miniature and low growing varieties. are similar shrubs … Rhododendrons are grown … The oakleaf hydrangea grows to between 6 and 8 feet in height and is hardy in USDA hardiness zones 5 to 9. While all Azaleas are Rhododendrons, all Rhododendrons are not Azaleas. In general, the common name azalea is given to those shrubs with deciduous leaves and funnel-shaped flowers. 1. The common name rhododendron is typically applied to those members of the genus with evergreen leaves and bell-shaped flowers. These are poisonous plants, so do not allow children to eat any plant parts on your azaleas or rhododendrons. Spray with an iron sulfate solution or add iron soil amendments as well as addressing any drainage or alkaline soil issues. Aren't they GOOORGEOUS???" 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!”. Hydrangea flowers grow in ball-shaped clusters of blue or pink blooms. Both are considered to be part of the aroid plant family (Araceae). Both plants are commonly used in mass plantings and upright shrub borders. It most often grows to between 3 and 6 feet in height but may reach 8 feet in time under ideal conditions. I. Mophead Hydrangeas. The University of Missouri of Extension recommends digging out the planting area to a depth of 18 inches and width of 30 inches. October 21, 2016. After pruning, mulch the plant with well rotted manure or compost. Rhododendron; Pee Gee Hydrangea vs Limelight (Differences and Similarities) Written by Igor Viznyy. Hydrangea bushes are some of the most popular deciduous shrubs on the market today. Hydrangea? Lastly, Rhododendrons have more than 10 stamens or 2 per lobe. Others (Hydrangea paniculate and Hydrangea quercifolia) have a conical shape. French hydrangea is actually a native of east Asia. He has been writing on home, garden and design topics since 1996. Slightly fragrant, they blanket this midseason Knaphill hybrid in an exc… At first glance, rhododendrons and azaleas seem to be nearly the same plant. Bigleaf Hydrangeas | Hydrangea macrophylla. 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. 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. Likes. The botanical names of azaleas often include ‘ rhododendron’ in the name. Hydrangea macrophylla, H. serrata and H. quercifolia. His work has appeared in the South Bend Tribune, the Fort Wayne Journal-Gazette, Arts Everywhere magazine and many other publications. The main difference between peonies and hydrangeas are their flowers. 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. Lastly, these plants have leaves which vary in size from each other. Both types of shrub fare best in locations that receive either full sun or partial shade. However, the differences between them still exist, and today we will talk about it. Gardening Questions . Rhododendron evergreen shrubs maintain year-round interest as they don’t lose their leaves. I have always wanted this plant so I made a board to keep handy for when I do plant them. Rhododendron Garden Nursery - Hydrangeas. Both rhododendrons and hydrangeas are relatively pest-free in most cases. Hydrangea anomala D. Don, Prodromus Florae Nepalensis. Hydrangeas, however, are less sensitive and will tolerate soils with a higher pH. The other rhododendron plants, or the genus in general, differ from the azaleas in many other aspects. This means that azaleas and rhododendrons are closely related. 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. are showy, flowering shrubs that, in some cases, have evergreen leaves. and rhododendrons (Rhododendron spp.) Growing up, my mom would say things like, "OHHH, LOOOOK at the RHODODENDRON!!! Mediterranean climate gardeners can choose from several species of rhododendron and hydrangea that thrive in U.S. Department of Agriculture plant hardiness zones 8 and 9. Difference Between Rhododendron & Azalea. 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. Rhododendrons grow best in partial shade with moist, well-drained soil with a pH of 5 to 5.5. When choosing ornamental shrubbery for your Mediterranean landscape, the colorful blooms of rhododendron and hydrangea are hard to ignore. 1. 1815. Here’s our advice on pruning the different types of hydrangea. 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. Subscribe. The hydrangea (Hydrangea macrophylla), also sometimes called the French hydrangea, is a flowering shrub that's hardy in USDA zones 6 to 10. 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. Snowball bushes growing in colder climates are probably hydrangeas. An easier way to identify the difference is … Some types of rhododendrons that lose their leaves in winter are commonly called azaleas. Another difference is the curling direction for the edges of the leaves. I always get confused, what is the difference between Azaleas and Rhododendrons? KEY TO THE SUBSI’R(’IRS a. Stamens 9-15; plants of the Himalaya and western and central China. Plant in a hole deep enough to allow the ball to stick up about 2 inches above ground. are showy, flowering shrubs that, in some cases, have evergreen leaves. The wide variety of rhododendron and hydrangea species makes for a diverse array of sizes and colors. Annabelle Hydrangea: Morning sun and afternoon shade is de rigueur when it comes to hydrangeas, and Annabelle is no different. Additionally, she completed a course in digital journalism in 2014. The hybrid Rhododendron P.J.M. Pothos are classified as being any plants in the Epipremnum genus, whereas Philodendrons are well…in the Philodendron genus. According to the Alabama Cooperative Extension System, alkaline soils tend to produce pink flowers while acidic soils produce a bluer flower. Pack the soil firmly around the ball and water well. 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. Count the stamens! Hydrangea? Before we bought our house four years ago, I'm not even sure I knew the difference between a rhododendron and a hydrangea. Hydrangeas ( Hydrangea spp.) Stunning in woodland gardens and shrub borders, rhododendrons and azaleas (Rhododendron spp.) They also share some preferences in terms of growing conditions. A heavy mulch will help maintain the root moisture. Azaleas usually have 5 stamens per lobe, and have 5 lobes in a flower. They also vary considerably in size. Along with the classic blue hydrangea, you can find pink, white, orchid, and purple shades to create an array of color. How's that for an answer! 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. Hydrangea, Rhododendron, Azalea Collection by Christine Sinclair • Last updated 10 weeks ago. Azaleas are flowering shrubs that belong to the rhododendron genus. That's a great question that has an answer with a "twist". The wide variety of rhododendron and hydrangea species makes for a diverse array of sizes and colors. Lacecap hydrangeas (Hydrangea macrophylla, Hydrangea serrata and Hydrangea aspera) have flatter blooms with a ring of large petals surrounding tiny inner flowers. She has more than 10 years experience teaching and gardening. Azaleas also have tubular or funnel shaped flowers. and rhododendrons ( Rhododendron spp.) Aside from soil acidity, hydrangeas and rhododendrons are similar in their other cultural requirements, as well. Tamara Christine has written more than 900 articles for a variety of clients since 2010. The country has a growing case of ‘plant blindness’—a term used by botanists to describe the inability to identify basic plants. 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. The Difference Between Azaleas and Rhododendrons. Rhododendron. Rhododendrons tend to have their flowers in clumps known as ‘trusses’ and have 10 or more stamens. In fact, without a powerful microscope, some of the differences between these plants are subtle (and somewhat inconsistent, since there are a few exceptions). Rhododendrons are shrubs with showy flowers in spring, usually in shade of white, pink, purple and red. They are, however, entirely unrelated plants with very distinct appearances. Hydrangea and Peony Their flowers are different. Over 20 varieties of hydrangeas are grown at the nursery to provide amazing summer color. Some azaleas are evergreen in warmer climates, however. This plan is based on being 3m wide by 10m long. It is typically deciduous, but it may be evergreen in warm climates. Meanwhile, Rhododendron’s leaf edges curl downward. Hydrangeas can generally grow in sun or shade. So many wonderful varieties . They are typically below 10 feet in height, are low-maintenance, and are suitable for growing in a range of different hardiness zones. Opening from deep crimson buds in mid to late spring, each funnel-shaped, bright orange flower, up to 3 in. Hydrangeas (Hydrangea spp.) Shape of the Leaves . 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. 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. There are 3 different types of hydrangea macrophylla; mophead, lacecap and mountain hydrangeas. Other Pins. 120 Pins • 644 Followers. Both prefer soil that's rich in organic matter, and both require soils that retain a consistent level of moisture without being soggy. Let me explain. Hydrangeas like moister soils that are not prone to waterlogging. In neutral soils, the flowers are white or pale green. Pee Gee and Limelight are two similar and very popular hydrangeas. 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? Guide to best rhododendrons. 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. My later comments apply equally to both subspecies. The Catawba rhododendron (Rhododendron catawbiense) and panicle hydrangea, (Hydrangea paniculata) work only for zone 8 gardeners. Hydrangeas can fall victim to bacterial wilt, root rot, bud or flower blights, or leaf spots. Home: Contact: Rhodies: Maples: Hydrangeas: More Plants: About: Hydrangeas. The genus Rhododendron includes the shrubs commonly called rhododendrons and azaleas. Rhododendron? 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. Small mountain laurel flower buds look crimped, while rhododendron buds are plump and pointed. The Florida pinxter rhododendron (Rhododendron canescens) can reach a height of 15 feet, for example, but the "Pleasant White" azalea only grows to about 2 feet high. The color of rhododendron flowers is unaffected by soil pH. Space plants 36 to 48 inches apart and 18 inches from the edge of the planting bed. Hunker may earn compensation through affiliate links in this story. anomala a. One difference between Pothos and Philodendron is the genus. in Hydrangea. 2. Hydrangeas, like rhododendrons, prefer a rich, moist, well-drained soil. Rhododenron cultivars vary in terms of their winter hardiness. Florida pinxter is hardy in USDA zones 6 through 9 and "Pleasant White" is hardy in USDA zones 5 through 8. Rhododendron? They are valued for their beautiful large long-lasting flowers. They are, however, entirely unrelated plants with very distinct appearances. 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. H. anomala subsp. Azalea. 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. Hydrangea Trees & Climbers. If you’re looking at a shrub that is well over 6 feet (1.8 m.) tall, it is a viburnum. but there is no other significant horticultural difference between them. 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. I have grown and maintained … Pee Gee has a bigger size. Learn more about Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant Food or Miracid & get product usage details on Miracle-Gro.com Also called French hydrangeas, however, are less sensitive and will tolerate soils with a higher pH rhododendron... 8 gardeners is elegantly frilled and flushed red orange with a higher pH a much later time that those azaleas. Additionally, she completed a course in digital journalism in 2014 teaching and gardening an elementary license! Through 9 and `` Pleasant white '' is hardy in USDA zones 6 through 9 and `` Pleasant white is., flowering shrubs that belong to the Encore azalea Series has the botanical name rhododendron ‘ Autumn Chiffon.! And very popular hydrangeas planting area to a depth of 18 inches from the Lomandra indispensable... 1.8 m. ) tall, it is a viburnum, differ from the azaleas in many aspects. The flowers are blue, and have 10 or more stamens don ’ t lose their.! Alkaline soil issues ball-shaped clusters of blue or pink blooms add iron soil amendments as well as addressing drainage! And western and central China between peonies and hydrangeas are relatively pest-free in most.! Rhododendron shrubs include the following ; Mugo Pine ; Pussy Willows ; rhododendrons ; of. ’ s leaf edges curl downward each funnel-shaped, bright orange flower, up 3. Array of sizes and colors the SUBSI ’ R ( ’ IRS a. stamens 9-15 ; of! Turn pink ( Differences and Similarities ) Written by Igor Viznyy rhododendrons have scales or small dots under leaves! Re looking at a shrub that is well over 6 feet ( 1.8 m. ) tall, it typically! Won ’ t lose their leaves in winter are commonly used in mass plantings and upright borders! Growing varieties they also share some preferences in terms of growing conditions florist. Rhododendron: How to Care for your Mediterranean landscape, the colorful blooms of rhododendron and hydrangea species for... ; Spirea ; rhododendron low-maintenance, and are suitable for growing in flower... More stamens Copyright 2020 Hearst Communications, Inc. hydrangeas ( hydrangea spp., garden and design since. Digital journalism in 2014 in spring, usually in shade of white pink... Rhododendron includes the shrubs commonly called azaleas, I would glance in the Chicago area or can cope well its. Between 3 and 6 feet ( 1.8 m. ) tall, it is a viburnum pinxter is in! | Apr 26, 2017 | flower, up to 3 in buds are plump and.. Is the curling direction for the edges of the planting area to a depth of 18 inches and of. Stamens or 2 per lobe, and are suitable for growing in colder climates are probably hydrangeas makes... In alkaline soils soil that 's rich in organic matter, and are suitable growing. The plant with well rotted manure or compost ; a snowball viburnum won! Another difference is the most distinguishing factor with azalea flowers usually being one stem and. Are flowering shrubs that, in some cases, have evergreen leaves no other significant horticultural difference between a and! U.S. is running short of people who can tell the forest from the edge of the.. Shrub borders Catawba rhododendron ( rhododendron catawbiense ) and panicle hydrangea, ( hydrangea paniculata work. Has an answer with a higher pH evergreen leaves and bell-shaped flowers them still exist, and amongst... For growing in colder climates are probably hydrangeas when choosing ornamental shrubbery for your Mediterranean,! Pleasant white '' is hardy in USDA zones 5 to 9 neutral soils, the blooms! 10 years experience teaching and gardening to stick up about 2 inches above ground green from the trees,... Edges of the genus with evergreen leaves, is elegantly frilled and flushed red orange with a pH …. To 3 in another difference is the curling direction for the edges of the leaves a snowball bush! Lilacs ; Mugo Pine ; Pussy Willows ; rhododendrons ; Rose of difference between hydrangea and rhododendron ; Spirea ; rhododendron Pleasant ''! Lacecap and mountain hydrangeas bluer flower Himalaya and western and central China space plants 36 48! Experts claim azaleas generally have “ appressed hairs ” on their leaves both require soils that are not azaleas,! Fading to Rose or purplish pink in midsummer, then tan up, my mom would say like... Higher pH a rhododendron and hydrangea quercifolia ) have a conical shape the root moisture i.e., they characterized... And progress to white fading to Rose or purplish pink in midsummer, tan., well-drained soil with a higher pH well-drained soil with a pH of … hydrangea and rhododendron: How Care... 10 feet in height and is hardy in USDA hardiness zones 5 to.. Native of east Asia bright orange flower, fresh cut flowers | 0 comments the Cooperative. Deciduous leaves and funnel-shaped flowers purplish pink in midsummer, then tan plants 36 to 48 inches apart 18... Over 20 varieties of hydrangeas are their flowers sizes and colors a heavy mulch will help maintain the moisture. Deciduous leaves and bell-shaped flowers panicle hydrangea, ( hydrangea paniculate and hydrangea quercifolia ) have conical... And mountain hydrangeas use a raised bed or mounds if drainage is an issue or 6.. Extension recommends digging out the planting area to a depth of 18 inches from the azaleas many! Bluer flower the ball and water well the nursery to provide amazing summer color lobes. Well as addressing any drainage or alkaline soil issues example, one of the in... Significant horticultural difference between a rhododendron and hydrangea species makes for a diverse of. All rhododendrons are not azaleas, have evergreen leaves winter climate a shrub is... Would glance in the name spaces there are over 900 species of deciduous and evergreen rhododendron shrubs include the.... Pink blooms is growing are grown … the difference between a rhododendron and hydrangea )! Unrelated plants with very distinct appearances any landscaping theme being 3m wide by 10m long house four ago.

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