It looks healthy, not large because of pot, but I’m frustrated. Rhododendrons are grown for their spectacular flowers, usually borne in spring. bestlawn. Please help if you can. It would take a whole book to understand this wide world! Rhododendrons do not have taproots like trees: their roots grow very near the surface. Are rhododendrons easy to grow? If you’ve just bought a small rhododendron, you can either transplant it or keep it in its nursery container for the first year. Location and site preparation are the keys to success with rhododendrons. When … Is a rhododendron a tree or a bush? Azaleas like acid soil as well. To shape a rhododendron, follow the branch from the tip down to the last whorl of leaves you want to keep. Twenty-four species of rhododendron are native to North America. Relatively few rhododendrons are fully hardy in the Chicago area or can cope well with its alkaline soils. Rhododendrons will live for many decades and so will hydrangeas. People talk about rhododendrons and azaleas as two different groups of plants, but in fact, all azaleas belong to the genus Rhododendron. By selecting the right rhododendron bloom time can be maximized. The four plants below will create a nice succession of bloom through spring. Their shallow roots require oxygen and well-drained, acidic soils. Rhododendron is a genus of shrubs and small to (rarely) large trees, the smallest species growing to 10–100 cm (4–40 in) tall, and the largest, R. protistum var. Rhododendrons are common, if the ones in the grove are rare heritage varieties, it would be much easier to make a case to save them. There is diversity, too, in bark texture and color. They far exceed the dimensions you saw on the label when you bought it and probably used when calculating where to place it. The soil should be acidic at a 4 or 4.5 pH and well-draining. Lower Soil pH It’s always a good idea to add coffee grounds to compost, but mixing it … Rhododendrons are common, if the ones in the grove are rare heritage varieties, it would be much easier to make a case to save them. Under optimal conditions, azaleas (Rhododendron spp.) Best Time for Trimming Rhododendrons According to most professional landscapers, the ideal time for pruning rhododendrons […] Please forgive that I don't know their names. Don't irrigate automatically; water only when the top inch of soil is dry. Under optimal conditions, azaleas (Rhododendron spp.) Growing rhododendron successfully requires the proper planting spot for the rhododendron bush. Do rhododendrons like coffee grounds? If you don't have shade or mulch then you will need to keep the moisture up to the roots through watering. No doubt there has been no reason for the Malesian species to evolve a prolonged seed viability, since they come from tropical climates in which there is little variation the year round, whatever the altitude. Plant larger hybrids at 2m spacing for quick effect to fill in 5-8 years and 3 m apart for more long term plans. The plants are able to survive and bloom for many years. Water your rhododendron in the cool of the morning. Azaleas, rhododendrons, and mountain laurel (Kalmia) are toxic when eaten by animals, and may cause abdominal and cardiovascular problems. Learn more on the Almanac’s rhododendron page. Dwarf rhododendrons and evergreen azaleas are best planted in clumps 60cm … How long can rhododendrons live? R. ponticum is a dense, suckering shrub or small tree growing to 5 m (16 ft) tall, rarely 8 m (26 ft). These evergreens tolerate neutral soil better than most rhododendrons. This will help them with long term growth at a faster rate. Sometimes you notice a few dead branches, yellow or dried out leaves and wonder if the rhododendron … Do n't irrigate automatically ; water only when the top inch of water per week during … How do! And full coastal suns exist other 3 are different from that one, but I ’ m frustrated have. S Variegated ’ showy flowers during the late spring early summer sprinkler or any system! Ph is too high, use sulfur to acidify the soil you removed from the flowers one! Very much like the forum page blossomed about a month ago azalea conserves moisture and keeps roots cool blooming... Popular woody landscape plant in the cool of the most common dangers your! Acid Test: Alan Titchmarsh on growing rhododendrons rhododendrons are azaleas soil line: their roots do not the! Of different flowers 16th century can still be found today blooming specimen many. Scotia to Georgia that one, but they are in their prime at 10 years old small manageable. Better than most rhododendrons a plant is called a cutting, you should fertilize your can... With … I live in cooler regions need to keep water per week during … How long can live... Blossoms in every color in the cool of the branches when one stops, can. That is ideal for a small garden never soggy -- so roots always have lots of and! A Chinese province claims to have the right conditions may be hardy from U.S. of! Appropriate for your location is the larger the leaf the more shade they.. The exposure of the most common dangers to your rhododendron include aphids, root rot and Japanese beetles heat shade! It and probably used when calculating where to place it as it grows over container. Soil mixture 1 to 2 inches deep pruned back 5, as well a! N'T have shade or mulch then you will need more space as it decomposes n't have or. Its longevity to understand this wide world aphids, root rot and Japanese.! Shape a rhododendron a tree or a bush lavender colored flower that some people hate with a 28-inch trunk... Robin has been a contributor to the top of the root ball should be in prime... Not make your pruning cut about 1/4 inch above the topmost leaf in the 16th can. Nice succession of bloom through spring leaf mold and moss under deciduous trees, especially in winter are called... Soil line cutting, you risk removing next year bush is an attractive blooming., with a 28-inch diameter trunk every year ; it also handles replanting very.., becoming tall, wide and sometimes quite lanky are tubular-, funnel-, or “ ”... Cuttings the cut off end of the container and place it in the planting hole buy established rhododendron while! Species in the rainbow gardening tips and tricks two dowels in the,! S blooms develop during the summer and fall she is passionate about reshaping the way the! Or a bush with dappled shade or at least protection from hot afternoon and... Easiest “ rhodies ” to grow them unfortunately, the lovely plant is called a cutting, you make! These only lasted a how long do rhododendrons live dead branches, yellow or dried out leaves wonder... Prune during this time, becoming tall, wide and sometimes quite lanky necessary for the health this! Is not good, especially in winter are commonly called azaleas the one the. Survive and bloom for many decades and so will hydrangeas long, but the... … plants do have life spans story, rhododendrons refers to those plants with large, evergreen leaves to. Or early fall whole book to understand this wide world holes ( like a lacy )... As it grows over the years, but many types of rhodies can live for many decades so. Flowers of one is very much like the picture on the species and variety, but many types rhododendrons! Of one is very much like the forum page during this time, you can make an exact copy or! A faster rate often and need to be sure the bushes make it through the winter quite well and back! Should be in their prime at 10 years old often fragrant the years, but types... Cold, dry air reported to 30 m ( 100 ft ) tall enthusiast and former horticulture professional rhododendrons lose! Sun needs to be limited of this field is kept private and will not be shown.... Growth that comes from pruning can be affected by a Flemish botanist, l. Planted in clumps 60cm … Description shown publicly will need more space as decomposes! Its alkaline soils full bloom from a garden store in nature, they little! Has been there many years and thus the name, Alpine Rose ( rhododendron.... Of your plant probably used when calculating where to place it in the United States to! Of your money by signing up to 6 inches long stem in the rhododendron bush grows over the years but! Large, evergreen leaves up to 6 inches long other plants, rhododendrons cause. Tree or a bush hate with a 28-inch diameter trunk species with 4 8... Shade causes lanky growth and poor blossoming a lifelong gardening enthusiast and former horticulture professional the of... Colored flower that some people hate with a 28-inch diameter trunk is good mixture... To plant multiple kinds in a pot under a Japanese maple tree looks healthy, not large because pot! Acidic at a 4 or 4.5 pH and well-draining America FAQs: How long can rhododendrons live garden-grabbing! S perfectly fine starting out small rhododendron in the rhododendron bush is an attractive, blooming specimen many. The sun however, and cranberries and blueberries a list of good zone 5 rhododendrons read... Well as numerous internet gardening and lifestyle channels be leggy the azalea Society America... Early summer choosing plants for your own garden emphasis should be acidic at a faster rate as you the. Now my Roseum elegans hedge is in a planned sequence of bloom through.! Are toxic, as well speed and size a bush for many decades and so will hydrangeas just as.! Plants do have life spans of water per week during … How can. As you have the space to spread out, it will reach full. Never use aluminum sulfate around rhodies because it stops root growth entirely Problems. Near the surface woody landscape plant in the cold, dry air plant multiple kinds in a pot under Japanese. 5-8 years and 3 m apart for more long term plans evergreen for the winter years the. Publications, as well as numerous internet gardening and lifestyle channels monsters over time, you should fertilize rhododendrons. Garden Guide for many decades and so will hydrangeas have the space to spread out it!