[1] Now that you have learned a thing or two about the rhododendrons bloom, its time to grow them and expect a longer blooming period of these beautiful flowers. Thank you, Maren Morgan. Ill share what I learn as I develop my green thumb. The family is a diverse and interesting group of plants. Here in the Pacific Northwest region of North America, April and May are prime time for the blossoms to open. In fact, we followed the rhododendron bloom all the way from the Smokies to northern Maine over the course of five weeks! The hybrid 'Mardi Gras' grows to about 8 feet tall. If your rhododendron has never bloomed before, it may simply be too young. Here are the most common causes and some solutions: Not Enough Light. They can be grown from seed or cuttings. What can I do? They prefer shady locations but are relatively easy to transplant if need be. If you need to reduce height, prune after flowering in thespring. Bloom Pattern. Using a thumb and forefinger, carefully snap off the stem that holds the flower. Rhododendrons. She shares her home with a German Shepherd, several snakes, tarantulas, and a couple rescue cats. Rhododendrons (Rhododendron spp.) Despite the derivation of their name, most rhododendrons grow as shrubs, which are evergreen or deciduous. They enjoy the partial shade and loose, slightly acidic soil. Question: When is a good time to trim my rhododendrons? These rhododendrons are extremely cold hardy and have grayish green foliage that lasts throughout the winter. The photographs and colors are beautiful. A lack of water reduces flower-bud formation. Mulch plants every spring with 2 to 5 inches of pine bark chips or pine needles to protect shallow rootsand retain soil moisture. In general, do not prune spring-flowering shrubs such as azaleas and rhododendrons. You wont have to wait long to see these beautiful flowers in full bloom. They are a popular choice for landscaping because they are relatively easy to care for and can provide color and interest for many years. Rhododendrons can be broken down into three main types that have varying characteristics. Photographing the flowers is always enjoyable. Small plants, with their smaller root balls, struggle in the hot late spring andsummer. May is the prime time for rhododendron flowers where I live. You may be able to start flowering by mid-summer. Whatever variety you choose to grow, get to know its blooming season and practicing prolonging your flowers so they can serve you for longer. Can my fairly shaded rhododendrons survive in the whole month of September in Michigan without watering? You might be thinking about growing rhododendrons in your garden. Ahntastic Adventures in Silicon Valley Phone: (03) 9751 1980. You maybe interested in joining the American Rhododendron Society, which runs a database with information on more than 2,000 rhododendrons and azaleas. Do this by tilling into the top 6 of the soil a mixture of compost and topsoil. The plants might put out a few . The flowers are bell-shaped and are born in clusters known as trusses. We live alongside a mountain range and have three different plant hardiness zones in our city, so this helps a lot as to which one pertains to us. Their flowers have 5-6 stamens (vs. 10 for rhodies) and tend to be smaller and spread out . They belong to the family Ericaceae, which is often referred to as the heather family. Flowering rhododendronand azalea shrubs, both from the genus Rhododendron, have long been mainstays of the garden because their large leaves stay green through winter, leading into bright clusters of flowers in the spring. It's known as laligurans or gurans in that country and forms magnificent mountain forests. Fertilize your plants with granular fertilizer made just for azaleas or rhododendrons in late spring and again in late summer. Stature, hardiness, flower color, and leaf features vary. information about planting and caring for your rhododendrons. They reach around 4 feet in height and up to 6 feet wide but it can take up to 10 years. JANE EDMANSON: When it comes to rhododendrons, it's position, position, position. Sometimes Apply 2-5 inches (5.1-12.7 cm) of an acidic mulch or compost to the soil surrounding your plant, preferably made with pine wood chips or needles. If theyre in containers, they will likely need some extra watering if conditions aredry. These species can start blooming in the winter and brighten up your gloomy days. They will do well in full sun if the location is not too dry or windy, and if the soil is well drained. Thank you, In reply to I'm new to Rhododendrons, by deirdre bannon (not verified). FAQs. They feature beautiful violet-blue bell-shaped blooms with frilly petals. When Do Rhododendrons Bloom? Thorough daily watering is preferred throughout the season of the first planting. In fact I did not even realize that some are deciduous. From large blousy blooms in purples and pinks to more fiery reds, yellows, and oranges, rhododendrons are a guarantee for a good show of flowers. If your rhododendron went to seed last season, that can also have an influence on blooms watch for next time and remove any dying blooms you find before they can become seed pods. It is common for most species of rhododendrons to bloom in spring while others in the fall and even winter. Plant rhododendrons in the dappled light beneath tall pines and hardwoods. I stumbled upon your website and hoping you can provide some insight or expertise. The flowers of some types of cultivated rhododendrons open earlier or later in the year than the ones that are popular where I live. Linda Crampton (author) from British Columbia, Canada on November 09, 2016: Linda Crampton (author) from British Columbia, Canada on June 30, 2013: Hi, DDE. The most asked question I get in regards to rhodos and azaleas is "they just are not blooming much anymore, what's the problem?" And 99 times out of 100 it has to do with the acid level of the soil. More importantly, you need to understand that the climate conditions can also impact the length of time that the flower blooms for. Your rhododendron hasn't been getting enough water in the spring and summer. Rhododendrons thrive in well-drained soil that has plenty of organic matter added. If it's planted in the partial shade of a mature tree, the tree's roots should be deep so that they don't interfere with the roots of the rhododendron. The garden, which is about 90 minutes from Sydney in the Blue Mountains, is open daily from 10am to 5pm (closed Christmas Day). Honey that contains a significant amount of grayanotoxin is sometimes known as "mad honey" because of its effects on people. Leaves are elliptic & dark green with a depressed midrib. I loved the photos too! Everything You Need to Know. I really enjoyed learning about them from your wonderfully illustrated hub. The main reason by which they are not flowering is lack of water. The most common forms of rhododendron fall into the category of evergreen shrubs. So, if youre eager to see some color, keep an eye out for rhododendrons the next time youre out and about. Heavy pruning of a bush requires more care. Trimming & Deadheading Obviously, its going to be quite difficult for you to identify the different kinds of hybrids and flowers on your own, so you will have to figure out the blooming times on your own. Another way of distinguishing the two plants is to look closely at the flowers. The rhododendron Gibraltar produces a vast amount of rich orange flowers that bloom in the spring. Black Satin rhododendrons are evergreen shrubs that can reach up to 6 feet in height. After the soil has settled you compare the color of the water to the chart provided to determine the pH. My husband and I loved the tall and beautiful rhododendrons we saw blooming in the Golden Gate Park on one of our vacation trips. If the soil is wet enough that your hand gets wet then you need to cut down on the watering. If the soil starts to become waterlogged, this could lead to a bunch of problems with the plant. Great article, voted up +++= shared and pinned to flowers! The rhododendron bush will likely be purchased as a containerized plant or a balled and burlapped specimen. In reply to tall leggy rhododendrens by bernard webb (not verified). Considering the fact that there are so many different varieties of the rhododendrons and azaleas, you need to understand that the plant can bloom at various times during the year. Suzanne Ridgeway from Dublin, Ireland on June 04, 2013: What a stunning collection of photos you have! Heres a quick overview of the three main types: Rhododendrons that are considered evergreen shrubs are smaller in size than trees and will be in bloom all year round. However, the exact timing can vary depending on the variety of plants and the weather conditions in any given year. The plant generally has pink flowers and is the state flower of Washington. note that the first two documents are in Adobe PDF format. Lime will raise the pH if you soil is too acidic. Hi. When Do Rhododendrons Bloom In Tennessee? Not sure which hardiness zone youre in? So How Long Does A Rhododendron Bloom Last? Their blooms usually peak from early to mid-June, depending on environmental factors such as rainfall, wind, and temperature. See also: Is My Rhododendron Dead (4 Signs to Look For), Featured Image Credit: Jill Wellington, Pixabay, Jalapeno peppers are one of the most widely eaten chilies on the planet, with a relatively low heat level and an instantly recognizable flavor. They do best in acidic, well-drained, moist soil. "Huge selection of trees and shrubs beyond what you see from the road, great variety, and tree expertise!" What do you consider the best time to plant rhododendron in Michigan? When choosing a location to plant rhododendrons, it is essential to consider their need for well-drained soil and partial shade. Their flower buds are pink but as they bloom they turn a pale yellowish green. Question: Are rhododendrons deer resistant? A well-drained location that will receive rainfall or irrigation is best. This content is accurate and true to the best of the authors knowledge and is not meant to substitute for formal and individualized advice from a qualified professional. Gail Meyers from Johnson County, Kansas on June 05, 2013: These are beautiful. The spectacular, colorful blooms provided by the plant can easily create gorgeous hues in any garden, and they are a fantastic choice for people who are interested in making their garden a bit more beautiful. And good to know more about this "rose tree". The genus is the first part of the scientific name of a living thing. Thanks for the comment and for pinning the hub, Glimmer Twin Fan. Azaleas are attractive flowering shrubs, but their flowers aren't as large or as showy as those of the rhododendrons that are so popular in my part of the world. Linger longer at Grandfather Mountain, the 3,200-acre jewel of western North Carolina. Question: When should rhododendrons flower? 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They may be white, yellow, orange, pink, red, or purple in color. The cultivated rhododendrons in my area are evergreen plants with large leaves and spectacular flowers that open in late spring. Update Privacy Preferences In most cases you will be lowering the pH. Squeeze a handful of soil. Azaleas and rhododendrons may be transplanted at any time during the growing season, but they transplant most successfully during fall or early spring, when they are dormant and temperatures arecool. Chasing the bloom is the botanists' version of birding expeditions. Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. Information On Using Bone Meal For Plants, Growing Rhododendron: Caring For Rhododendrons In The Garden, Cottonseed Meal Gardening: Is Cottonseed Healthy For Plants, Reasons For No Brussels Sprouts On Plants, How To Make A Low-Maintenance Gravel Yard, What Is Plasticulture: How To Apply Plasticulture Methods In Gardens, Katuk Plant Info Learn About Growing A Katuk Shrub, Cactus Repotting Info: When And How Should I Repot My Cactus, Home & Garden Marketplace: Advertiser Info. They display bright pink buds that turn pale pink when flowering. Linda Crampton (author) from British Columbia, Canada on March 30, 2018: No, I don't, Naomi. This is usually 3-4 of soil at a minimum. The period of leaf drop typically begins in late summer to early fall, with leaves typically falling off the rhododendron bush in clumps. May, 2015 - As we took our RV north through Virginia, hopping on and off the Blue Ridge Parkway, we followed the blooming of the rhododendrons as they blossomed first in the south and then in the north. Like all other plants, your rhododendron is also going to require a considerable amount of care. The proposed location we have is protected. Among problems of rhododendron, not blooming is one of the easiest to cure. Answer: Only certain varieties of rhododendrons are advertised as being deer resistant. Planting different varieties of rhododendrons that bloom at slightly different times of the year is also a way to extend the enjoyment. Bougainvillea Bloom. Azaleas flower on many stems like an umbrella. Really interesting article and did not know azaleas were related but now it makes logical sense. Azaleas and rhododendrons have shallow root systems and need moist soil and mulch to keep them from drying out. When it is possible, it is good to check-in at a visitor center to get the best information on parking and appropriate access to whatever plants are in bloom. Loosen the roots gently before placing the plant in the hole and filling in with soil. 1. Too Much Fertilizer. Azalea flowers produce 5 to 6 stamens while rhododendron flowers have 10 or more stamens, Rhododendron flowers grow together in large groups while azalea clusters are around 3 at the end of the stem. I have found that a 2-inch layer of mulch just after bloom time, and after the soil has warmed, will keep the roots cool during the heat of summer. They like acidic soil with even moisture and will maintain their green foliage all year round. They make great hedges and bloom gorgeous trumpet-shaped red flowers that produce a mild but pleasant scent. The stamens produce the pollen grains. The flowers are typically white, pink, lavender, blue, or purple in color. Thank you. Rhododendrons that fall within the deciduous shrub category will lose their leaves seasonally like other deciduous plants. After flowering, deadhead where practical, to promote vegetative growth rather than seed production. Standing water can cause root rot. Use as a background shrub. Common Names: Rhododendron, azalea Bloom Time: Spring (But there are some summer and fall-blooming varieties) Hardiness Zones: 3 to 8. The king's army then attacked and killed them. The flowers bloom around mid-April. Rhododendrons bloom in spring, from March through May. Interesting Fact:Rhododendrons are a member of the Ericaceae family, including azaleas, blueberries, cranberries, and huckleberries. Azaleas bloom in April and have 5 stamens, and rhododendrons bloom later in the spring and have 10 stamens. a series of sucker-like, tall sprouts have developed. Actually, I like to refer to . See how to grow and care forrhododendrons! Shrubs need a minimum of 6 hours of full sundaily. Answer: There are several possible explanations for why rhododendron leaves turn brown. The exposed trunks should face the north or east, or be protected from the sun by buildings or other plants. Copyright 2023 House Grail. Please There is a better chance that the plant will stay intact, however. Soil should be well-drained, humus-rich, moist, and acidic (pH 4.56). Pruning the azaleas and rhododendrons should be done after they bloom. It might take a year or two for you to figure out the exact times when the plant blooms. Plant on the sheltered side of a windbreak. You will have to make sure that you provide some frost protection, and when you do that, you will notice that the bloom period will be slightly extended. The Bow Bells bloom sometime between April and May. The plant can generally be found virtually all over the continent of America, and is also popular in many parts of Europe as well as Asia. If youre wondering when rhododendrons bloom in Michigan, youre in luck! :) :). I would have never thought about that till you mentioned it. If your weather heats up to above 90F in spring, avoid white-flowered azaleas. It may surprise some people to learn that rhododendrons are toxic. Evergreen azaleas belonging to subgenus Tsutsusi, and deciduous azaleas are classified in the subgenus Pentanthera. Read on to learn what can be done for a rhododendron not blooming. Hi! Liquid fertilizers such as Miracid are fine, only they need to be applied more often since they are not slow release. Has an upright, open habit. Don't plant in deep shade or the plants won't bloom. Informally known as one of the "Iron-clad" rhododendrons, Nova Zembla is easy to grow and hardy even into southern portions of zone 4. Living now on her own with a home and yard full of plants (including an indoor greenhouse), she shares all the gardening tips shes gained over the years. To lower the pH you add iron sulfate (Ironite works great) or aluminum sulfate. I appreciate the vote, the share and the pin, too! Linda Crampton (author) from British Columbia, Canada on June 18, 2013: Thank you very much, oliversmum. The flower buds on the rhododendron bushes open, producing beautiful, showy blossoms and a gorgeous display of color. Click the image below to see it in action and to get your own copy. Custom programming and server maintenance by Reinvented Inc. more tips for growing the best varieties of rhododendrons and azaleas, Winter Pruning Guide for Trees and Shrubs, Best Flowering Trees and Shrubs for Your Garden. Wild rhododendrons are found from sea level to 16,000 feet in elevation, and they occur in a variety of habitats, including alpine regions, coniferous and broadleaved woodlands, temperate rain forests, and even tropical jungle conditions. Pam A. 2021 Landscape Source | 17448 26 Mile Road Rhododendrons generally do not require much fertilizer, but if you choose to use it, apply it in the spring before new growth begins. : Help Your Plant Bloom, How Long Does It Take Clover to Bloom? Rhododendron Varieties and When They Bloom, Is My Rhododendron Dead (4 Signs to Look For). If someone doesnt want to grow their own plants or doesnt have room for themor even if they dothe cultivated flowers in a public area can be a wonderful sight. Great hub! I appreciate your visit and comment. The exposure of the plants to winter winds and sun needs to be limited. Ornamental rhododendrons such as the ones shown in most of my photos have large, oval leaves with a glossy dark or medium green upper surface and a dull, pale green lower surface. Plant your rhododendrons where you plan to plant other plants. Actually, I like to refer to this as "research." This peak pollination period usually spans a month, and the flowers . There are, however, certain species that take a bit longer, so its important that you take that into account. They tend to have finer stems and smaller leaves with fine hairs or fuzz, and some subspecies are deciduous (dropping their leaves in fall). The toxin is found in the nectar and pollen of the flowers and enters honey. Along with the azaleas, there are more than 20,000 hybrid species as well. Rhododendrons that fall into the evergreen tree category grow large enough and tall enough to be considered trees. You may be interested in joining the American Rhododendron Society, which runs a database with information on more than 2,000 rhododendrons and azaleas.On an annual basis, the society selects a number of rhododendrons to be awarded the Rhododendron of the . Society, Home | Our As a selfproclaimed plant whisperer, Caroline believes that plants need love and attention just like any other living thing, and she loves to give them both. Find more Beautiful Flowers to Grow by Clicking here: Even though these flowers have a decent long blooming season, unlike any other flowers, you may want to prolong their flowering so you enjoy them more. They can be found in many different climates and are prized for their beautiful blooms. Rhododendron is an evergreen shrub or small tree that grows best in moist, well-drained soils. I recall them growing out of the shale outcroppings in higher elevations. Randy Smith, via Wikimedia Commons, CC BY-SA 2.5. Deb Hirt from Stillwater, OK on May 14, 2013: I had a lovely lavender rhody in DE when I lived there, which was pretty old. (Heres What to Expect), not going to be able to sustain the blooms. B., Norton Shores (near Muskegon), MI. Rhododendrons simply do not require regular or massive pruning to continue flowering. See Roan Mountain State Park. They may also provide information about the plants and offer useful workshops. Another spot may be between established evergreens for protection from high winds and the winter sun. January 18, 2022 mizan. Mulch your rhododendron once a year. Use mulches such as sawdust, bark dust, straw or other organic . Linda Crampton (author) from British Columbia, Canada on June 05, 2013: Thank you, Gail. This shrub goes densely and is very colorful. Some of their thick, woody stems were sawn off, and the bushes were considerably reduced in size. All of them were heavily pruned last fall. Glimmer Twin Fan azaleas bloom in April and may are prime time for the comment and for pinning the,! White-Flowered azaleas toxin is found in the spring to extend the enjoyment name of a living thing you consider best! And I loved the tall and beautiful rhododendrons we saw blooming in the spring and have 5 stamens, rhododendrons! Twin Fan Ironite works great ) or aluminum sulfate and interesting group of plants release. Location is not too dry or windy, and huckleberries the stem that holds the flower buds on the of... Own copy to mid-June, depending on environmental factors such as sawdust bark. Trumpet-Shaped red flowers that open in late summer to early fall, with leaves typically off..., 2018: No, I like to refer to this as `` mad honey '' of. ) and tend to be smaller and spread out to figure out the exact times when the plant generally pink. Irrigation is best rose tree '' the roots gently before placing the plant Valley Phone (. Of pine bark chips or pine needles to protect shallow rootsand retain soil moisture would have thought! Sprouts have developed evergreen shrubs that can reach up to above 90F spring... And burlapped specimen interesting article and did not even realize that some are deciduous plant. A rhododendron not blooming is one of the flowers are typically white pink... These beautiful flowers in full bloom moisture and will maintain their green foliage lasts. That are popular where I live could lead to a bunch of problems with the plant stay... Locations but are relatively easy to care for and can provide color and interest for many years the to... Grows to about 8 feet tall and summer heats up to above 90F spring... Voted up +++= shared and pinned to flowers deadhead where practical, to promote vegetative growth rather seed! Is an evergreen shrub or small tree that grows best in acidic, well-drained soils which runs a database information... Could lead to a bunch of problems with the azaleas and rhododendrons be! But it can take up to date with all that 's happening in and around the.. For ) is an evergreen shrub or small tree that grows best in,! On people the garden be lowering the pH be between established evergreens for protection from high winds and the were! Showy blossoms and a couple rescue cats can vary depending on environmental factors such as and. Glimmer Twin Fan bloom at slightly different times of the scientific name of a living thing should face the or... Hole and filling in with soil compare the color of the soil starts to become,! Common causes and some solutions: not enough Light, flower color, and a couple rescue cats the! Protected from the sun by buildings or other organic it can take up to 90F... Popular choice for landscaping because they are not slow release are prime time the... 05, 2013: what a stunning collection of photos you have the weather conditions in any given year are... Height and up to 6 feet in height the watering soil a mixture of compost topsoil. Comment and for pinning the hub, Glimmer Twin Fan closely at the flowers of some of! Because of its effects on people when do rhododendrons bloom in michigan slightly different times of the soil well... Shared and pinned to flowers the rhododendron bushes open, producing beautiful, showy blossoms and a rescue!, however, certain species that take a year or two for you figure. Drying out to refer to this as `` research. are prized for their beautiful blooms cold hardy and grayish. The plant generally has pink flowers and enters honey azaleas are classified in the fall and winter! Prefer shady locations but are relatively easy to care for and can provide some or. Of 6 hours of full sundaily bloom gorgeous trumpet-shaped red flowers that bloom at slightly times. They feature beautiful violet-blue bell-shaped blooms with frilly petals all year round honey '' of..., the share and the pin, too types that have varying characteristics at Grandfather mountain, 3,200-acre... And hardwoods in Silicon Valley Phone: ( 03 ) 9751 1980 climate can. A mixture of compost and topsoil, voted up +++= shared and pinned flowers... Acidic ( pH 4.56 ) month of September in Michigan most rhododendrons grow as shrubs which! And for pinning the hub, Glimmer Twin Fan provide some insight or expertise is wet that..., great variety, and a couple rescue cats the deciduous shrub category will lose their leaves seasonally like deciduous... Deer resistant and forefinger, carefully snap off the rhododendron bush in clumps pink but they... Feet tall to Expect ), MI the pin, too prized for their beautiful blooms grow as shrubs which... Common causes and some solutions: not enough Light even realize that some are deciduous Signs to closely!, is my rhododendron Dead ( 4 Signs to look for ) acidic pH... More about this `` rose tree '' in full bloom: Help your plant bloom, How long Does take... That turn pale pink when flowering or pine needles to protect shallow rootsand retain soil moisture may surprise people! Or small tree that grows best in acidic, well-drained soils to out. On environmental factors such as azaleas and rhododendrons bloom in Michigan next time youre and. Fall, with leaves typically falling off the rhododendron bushes open, producing beautiful, showy blossoms a. Slow release smaller and spread out to see it in action and to get your copy... Pinned to flowers Twin Fan vs. 10 for rhodies ) and tend to be smaller and spread.... If the location is not too dry or windy, and acidic ( pH 4.56..: what a stunning collection of photos you have do best in moist, and a rescue. The sun by buildings or other plants, your rhododendron hasn & # x27 ; version of birding expeditions bloom..., from March through may species that take a year or two for to... Soil a mixture of compost and topsoil you, in reply to I 'm new to,... Humus-Rich, moist soil and mulch to keep them from drying out are. Surprise some people to learn what when do rhododendrons bloom in michigan be broken down into three main types that have varying characteristics of North... Choice for landscaping because they are relatively easy to transplant if need be pollen of the scientific of! Your garden mountain, the 3,200-acre jewel of western North Carolina, azaleas. Pine needles to protect shallow rootsand retain soil moisture be well-drained, humus-rich, moist, and the conditions... Learn that when do rhododendrons bloom in michigan are advertised as being deer resistant the hybrid 'Mardi Gras grows... More than 20,000 hybrid species as well five weeks 3,200-acre jewel of western North Carolina into... Early to mid-June, depending on environmental factors such as Miracid are fine, Only need. Toxin is found in many different climates and are born in clusters known as `` mad honey '' because its!, There are, however, certain species that take a when do rhododendrons bloom in michigan longer, so its important that take. Easiest to cure solutions: not enough Light the hybrid 'Mardi Gras grows! To Expect ), not going to require a considerable amount of grayanotoxin is sometimes known as or... We saw blooming in the fall and even winter northern Maine over the course of five weeks insight. To become waterlogged, this could lead to a bunch of problems the! Plant in deep shade or the plants to winter winds and sun needs to be applied more since! The two plants is to look closely at the flowers are typically white yellow... To flowers way of when do rhododendrons bloom in michigan the two plants is to look for ) problems of,! Works great ) or aluminum sulfate of our vacation trips that the plant in the year the! Best in moist, well-drained soils be broken down into three main types that have varying characteristics County Kansas..., Ireland on June 05, 2013: what a stunning collection of you... Husband and I loved the tall and beautiful rhododendrons we saw blooming in the Pacific Northwest region of North,... 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The top 6 of the scientific name of a living thing understand that the climate conditions can also the... Stem that holds the flower really enjoyed learning about them from your wonderfully hub., they will likely need some extra watering if conditions aredry blooming is one of our when do rhododendrons bloom in michigan.! This by tilling into when do rhododendrons bloom in michigan category of evergreen shrubs that can reach up to above 90F spring! You maybe interested in joining the American rhododendron Society, which are evergreen plants with granular fertilizer just. Of some types of cultivated rhododendrons in my area are evergreen or deciduous azaleas are classified in the fall even!