That occurs partly due to its famous, among Nature lovers, wonderful large, showy, funnel-shaped flowers. The New Sunset Western Garden Book; Kathleen Norris Brenzel, Editor. Repeat regularly, because the spray kills only on contact. She writes about a variety of topics, with a focus on sustainable, pesticide- and herbicide-free gardening. Flame azalea prefers moist soil but never soggy, waterlogged soil. These truly sets the variety apart. Don't apply fertilizer after July 1; fertilizing late in the season makes the plant more susceptible to winter damage. Grow in moist, fertile, humus-rich acidic soil (pH 4.5 to 5.5) in dappled shade. It needs a few hours of direct sun. Flame azalea is appropriately named for the clusters of brightly colored, 2-inch blooms that decorate the shrub from late spring to midsummer. If the plant is bothered by pests such as lace bugs, scales or spider mites, spray the shrub with insecticidal soap spray. General care Pruning. Apply the fertilizer according to rate recommendations provided by the manufacturer. CARE. Azaleas can be divided into two recognizable groups, the evergreen azalea and the deciduous azalea, which drops all of its leaves in the fall during cold weather. This is why well-draining soil is so important. Flame Azalea Planting and Care As with many members of the Heath (Ericae) Family, azaleas are relatively low-growing shrubs with shallow-growing, fibrous roots known as understory plants in the woodland canopy. Water flame azalea generously when the top of the soil feels slightly dry, wetting the soil to a depth of 8 to 12 inches. Flame Azalea Facts Perhaps most notably, the mesmerizing Flame Azalea stands out from the majority of related species for its exquisite beauty. Propagation. The best time to plant azaleas is early spring or fall, before frost. Pruning group 8. Care Prefers full sun but may need shade in the South. Sign up for your FREE ACCOUNT today or login to receive detailed monthly care instructions. Insects that can affect azaleas include lace bugs and spider mites. A showy, deciduous shrub, flame azalea (Rhododendron calendulaceum) is native to the Appalachian Mountain region. National Gardening Association: Rhododendron Calendulaceum, Clemson University Extension: Azalea Planting, Utah State University Cooperative Extension: Solutions to Soil Problems, Cornell University Cooperative Extension: Growing Azaleas and Rhododendrons. It is native primarily to woodland slopes and mountain balds in the Appalachian Mountains from Pennsylvania to Georgia. This plant should get at least one inch of water per week, but be sure not to overwater for this will cause root rot. Alternatively, you can also lower soil pH by incorporating a sulfur product according to label directions. If your soil is alkaline, amend the soil generously with highly acidic organic matter such as peat moss or composted pine bark. M.H. Dyer began her writing career as a staff writer at a community newspaper and is now a full-time commercial writer. The Flame Azalea Shrubs Are Easy Plants to Grow in Shade. Flame azalea performs best in light to moderate shade or filtered sunlight. To determine your soil pH, use a testing kit available at most garden centers. Most gardeners consider the azalea shrub as an easy plant to grow, if located in the most suitable environment. Avoid overhead watering, and keep the foliage as dry as possible. Posted by Brent Wilson on 8/18/2016 to Fertilizing & Watering Tips. Flame azalea is a versatile shrub that is stunning in almost any setting. Watering at the base of the plant with a garden hose or soaker is best, because this azalea is susceptible to fungal and bacterial diseases in humid conditions. Semi-hardwood cuttings, Grafting, Layering . This low-maintenance, fast-growing plant tops out around 5 feet tall and 7 feet wide at maturity and is a heavy bloomer when in the right conditions. Plant shallow, as plants are surface rooted and like a mulch covering. The funnel-shaped flowers range in color from yellow to orange and deep red. How To Plant, Prune, Fertilizer, Water, Grow And Care For Native Azaleas And Deciduous Rhododendrons. Florida flame azalea is well-noted for its vivid display of yellow-orange, slightly fragrant, clustered blooms appearing in spring before the new leaves emerge. A showy, deciduous shrub, flame azalea (Rhododendron calendulaceum) is native to the Appalachian Mountain region. Well-suited to mass plantings in natural woodland settings, Florida flame azalea makes a traffic-stopping showing whenever it is in full bloom. Propagation methods. Amazingly, however, these incredible flowers conceal a few remarkable secrets. Rhododendron calendulaceum is native to the Appalachian Mountains in the eastern United States, ranging from southern New York to northern Georgia. Established flame azaleas benefit from application of an acid-based fertilizer specifically formulated for azaleas and rhododendrons every spring. Rhododendron calendulaceum, commonly known as flame azalea, is an upright, loosely branched deciduous shrub that typically matures to 4-8' (infrequently to 10-15’) tall and to 8-10’ wide. Flame azalea is suitable for growing in U.S. Department of Agriculture plant hardiness zones 5a through 8a. Lace bugs are more likely to target shrubs that are grown in areas of full sun. wide (7 cm), with buds resembling candle flames (hence the common name). It is native primarily to woodland slopes and mountain balds in the Appalachian Mountains from Pennsylvania to Georgia. It grows in mixed deciduous forests at elevations of 200-1000 m above sea level. Flame azaleas require very low maintenance, but do need some attention. © Copyright 2020 Hearst Communications, Inc. Propagation Root semi-ripe cuttings in late summer or autumn.