The shrubs grow 6 to 10 feet tall, with leathery green leaves and large clusters of purple or pink spring flowers. Rhododendron plants, similar to many other plants in the Ericaceae family, prefer acidic soils. Blooms mid to late spring & reaches roughly 4 feet tall. Height, flower color and … Both flowering shrubs and deciduous plants flake off debris like dead leaves and flowers during the summer and fall months. Rhododendrons like a slightly acidic soil with a pH of around 5. Rhododendron Size. Quick facts. Many of our competitors only offer small sizes, which will take years to reach an appealing height. Spray or apply a light coating of fertilizer to the rhododendron, as a heavy application can burn it. Know your rhododendron before choosing a planting location. Tall 2m+ in 10 years, ultimately 4-6m x 3-6m or more. Genus: Rhododendron. Growing tips. They usually grow from 3 to 8 feet tall and wide. The leaves are spirally arranged; leaf size can range from 1–2 cm (0.4–0.8 in) to over 50 cm (20 in), exceptionally 100 cm (40 in) in R. sinogrande. per year (1cm). Azalea flowers are funnel shaped, rather than the … Rhododendrons are closely related to Azaleas. Whether your rhododendron is a spring or fall bloomer, fertilize your rhododendron annually in springtime. Although most rhododendrons produce flowers with 10 or more stamens, azaleas only have five stamens. A columnar evergreen that can grow to more than 12 feet tall. For unusual salmon colored flowers, try “Spicy Lights,” a shrub that grows to six feet tall with an eight-foot spread. They get bigger than azaleas, 8 to 12 feet tall and wide (although I've seen our native Catawba rhododendrons towering 30 feet tall in … This plant likes good drainage & summer sun protection. Rhododendrons were first introduced in Britain in 1656. From hydrangea bushes to lilac bushes and every evergreen in between, many attractive, fast-growing shrubs provide privacy, hide eyesores, and offer food and shelter for pollinators, birds, and other wildlife in a matter of a few seasons. Why Fast-Growing-Trees.com is Better First, your Red Rhododendron is shipped in a larger container with nutrient-rich soil, ensuring you receive an established and better-developed plant. The Royal Horticultural Society is the UK’s leading gardening charity. giganteum, reported to 30 m (100 ft) tall. Chapman’s rhododendron (R. chapmanii) All: Three to 5 feet tall at 10 years; broad, upright, rounded shrub. Rhododendrons range in size from tiny shrubs such as Rhododendron ‘Cilpinense’, R. lutescens and R. spinuliferum, with its red firecracker-like flowers, up to the impressive tree rhododendrons from the rainforests of the Himalayas in western China which reach 20-30m (up to 100′) tall. As a result, they have there is no limit to how tall they can grow. Rhododendrons can be deciduous or evergreen, although many of the most popular varieties for the garden tend to be evergreen. Garden Fertilisers & Soil Improvers. ‘Hydon Dawn’ is a low-growing rhododendron that actually tolerates full sun. A densely foliaged, tight growing shrub. Growing Needs . It will grow in full to partial sun, and at full maturity, it can reach six feet tall. Small, round trusses have about 20 flowers. Growing guide How to grow rhododendrons. Ideal soil pH for rhododendron plants is somewhere between 4.5 and 6.0. Pale pink to rose flowers; late season². They are native to tropical and temperate regions. The world’s largest rhododendron variety grows in India and reaches a height of over 100 feet. Some Rhododendrons will experience a fast growth rate (2 ft. per or 60 cm) while others will slowly grow less than 0.5 in. Pale pink flowers bloom in mid-season. Portuguese laurel, or Prunus lusitanica, is a fast-growing evergreen with red stems. Discover rhododendrons. Bushes like the Golden Globe Arborvitae provide a short hedge or screen, protecting wildlife and giving areas of your landscape privacy. Shrubs like the fast-growing Forsythia provide beautiful color in the spring or the fall. The only rhododendron in evidence was the rampant R. ponticum – once a rootstock for more refined species, but now an invasive pest of Japanese knotweed magnitude. Rhododendrons are undemanding and easy to grow shrubs, their only essential requirement is an acid soil which is a soil in which the pH is 7.0 or below. There are some, like R. arboreum, that have an upright shape overall, but 1) they aren't terrible fast growing 2) they won't stop at 8' and 3) they probably won't look good hacked to 3' wide. The cultivars all vary by their time of blooming, bloom color and USDA hardiness zones. Rhododendron . Typically, fast-growing evergreen shrubs for privacy require more maintenance to look presentable. Slower growing rhododendrons tend to be smaller cultivars while the fastest growers take up more space. Because of the density of the plant, it will actually block the sound from next door. Rhododendrons are capable of growing indefinitely. They are evergreen and some (Azaleas) are deciduous and range from dwarf, compact and tall hybrids. While it is a bush, Rhododendron bushes can grow up to 80 feet tall! Bamboo . Large growing rhododendron plants We've hand-picked a selection of larger and tall growing rhododendrons, best suited to medium and large-sized gardens. ; Get your plants ready for the summer months by giving them a feed and a trim after flowering and apply Yates Waterwise Soil Wetter over the root area. “Orchid Lights” are zone 5 rhododendrons that grow to three feet tall with ivory colored flowers. Broadcast: Sat 5 Oct 2013, 12:00am Published: Sat 5 … Zones 7 to 9. If you choose plants that are the right size to begin with, they are relatively maintenance free. Firethorn. Blooming in late spring to early summer, each cluster (or truss) can hold up to 20 attractive bell-shaped … It will grow best in zones five through eight. My online searches haven't turned up many cultivars that will get really tall - 15 feet is the minimum that I want to consider, 30 or 40 feet would be even better. Plant parts are toxic if ingested. This is an evergreen shrub that can easily grow to be 13 feet tall… Azalea & Rhododendron. Arborvitae (Thuja) A fast growing evergreen that can reach 15 feet in height ... Wax Myrtle (Myrica) A fragrant evergreen shrub that is great for an informal hedge. Rhododendrons thrive best if you use fertilizers with high nitrogen, phosphorus, magnesium, iron, and calcium. A dense shrub with showy flowers that can reach 7 feet in height. Bushes and shrubs tie a landscape together. These are all the tallest growing varieties that grow 4 to 5 feet tall or higher and are ideal for use as specimens, in large or small groupings, or as colorful hedges in landscape borders and home foundation plantings. It is an excellent candidate for topiary or hedging. (Width doesn't matter: there's a lot of space.) It can reach quite a size and will become a small tree, but is easily kept in bounds by pruning. The best gardens to … For this story, rhododendrons refers to those plants with large, evergreen leaves up to 6 inches long. Discover rhododendrons. Zones 5 to 8. Bonus points for cultivars that are relatively fast growing and dense, though I'm … Azaleas are a popular variety of rhododendron that can grow to more than 10 feet tall. Both moisture and the length of the growing season will have a serious impact on their growth rate. Rhododendron growers know it for its extreme hardiness and as the parent of our most hardy hybrids. Rhododendron – A flowering woodland shrub, rhododendron works well in shady spots but might need some protection from winter cold in northern parts of … If you have had problems growing rhododendrons in the past, perform a soil test. They were introduced to the European Alps and thus the name, Alpine Rose ( Rhododendron histrum ) came into being, the first species of Rhododendrons. A large established Cunningham's white rhododendron grows in a cemetery in Canterbury: no-one looks after it and no-one waters it, but the mulch around it has created an environment where it can not only create enough moisture to survive - it has enough to thrive. Leaves are obovate with margins curved under, glossy & dark green. The Rhododendron has thrived probably because of the high rainfall of the West Coast. Flowers are two-lipped & light purple with light brown dorsal markings. Flowering Time In mild and maritime climates, in most of the UK, France etc, the flowering season can cover 7 months or more, from Christmas onwards, while in severe climates, Sweden and Northern Germany for example, the flowering season is compressed into a 3 month period starting in April. A Rhododendron bush, is a popular flowering bush and foundation plant, with bright spring blooms. Catawba or rosebay rhododendron (Rhododendron catawbiense), hardy in USDA zones 4 through 8, is also successful in its native Tennessee. Female plants also feature bright red fall fruits. Everything you need to know about choosing the right rhododendron for you. Otherwise, they can appear spindly and unattractive. You can amend the soils with peat moss, compost, and other soil acidifiers to keep them happy. Description. Grow in a sheltered spot in sun or part shade. Rosebay rhododendron or … To achieve this you may need to apply Yates Soil Acidifier Liquid Sulfur to lower the pH of the soil. ‘Nova Zembla’ is an evergreen rhododendron that grows 5 to 10 feet tall and bears bright red flowers in late mid-season. These varieties will reach a height of between 1.5 metres and 2.5 metres, typically with a spread of around the same. They are evergreen, and require very little maintenance. Get involved. Arborvitae – There are several varieties of arborvitae that are tall, fast growing, and perfect for privacy screens. 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. See our plants for privacy, all of which typically reach their mature size within a few seasons. Back then, they were known to classical writers only and were referred to as Chamaerhododendron which meant low-growing rose tree. "Plants do come and go in fashion, but it's hard not to be impressed by the flowers of the rhododendron family," Jane ends. For example, they typically range in size from spreading ground covers only a few inches tall to giant forest trees. Rhododendron “White Lights” produce pink buds that open to white flowers. Whatever bush or shrub you choose, your woody plants will help clean the air, protect the soil, and beautify your home. I'm not aware of any Rhododendron cultivar being known for a narrow, upright shrub shape. Heat tolerant. Rhododendrons grow from 1 to more than 20 feet tall, depending on the species, according to a National Gardening Association website article. Vigorous, Rhododendron 'Roseum Elegans' is a large, dense, broadleaf evergreen shrub that is valued for its large rounded clusters of rosy lavender flowers. Box ... flower colour usually in Spring. Rhododendrons are a diverse group of plants that also include both evergreen and deciduous azaleas. 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