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Azaleas have shallow root systems so adding mulch can help retain moisture and warmth in the soil. Wait until your area has had one or two frosts but before the ground is frozen.
Azaleas are shallow-rooted plants so two to three inches of an organic mulch will help protect roots from winter damage. Mulch will also help to conserve soil moisture during periods of dry weather.
Plant enthusiasts have selectively bred azaleas for hundreds of years. This human selection has produced thousands of different cultivars which are propagated by cuttings. [2] Azalea seeds can also be collected and germinated. Azaleas are generally slow-growing and do best in well-drained acidic soil (4.5–6.0 pH). [3] Fertilizer needs are low.
Rhododendron calendulaceum, the flame azalea, [3] is a species of Rhododendron. It is a deciduous shrub that grows up to 120–450 cm tall. This species of Rhododendron is native to the Appalachian Mountains in the eastern United States, ranging from southern Pennsylvania and Ohio to northern Georgia.
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Rhododendron vaseyi is a species of flowering plant in the heath family known by the common name pinkshell azalea. [4] It is endemic to the Appalachian highlands of North Carolina in widely scattered locations.
Ovulinia petal blight is commonly referred to as Ovulinia flower blight, Azalea flower blight, and Azalea flower spot. [1] First reported in the 1930s on the Belgian-Indica hybrids, petal blight can attack most azaleas under favorable weather conditions.
In Korean language, it is called 철쭉, cheoljjuk and if the color of the petals is white, the flower is called 흰철쭉, huincheoljjuk. [2] [3] The Royal Azalea is commonly chosen as a local symbol in South Korea, by provinces, cities and counties such as Gangwon Province, Gapyeong and Miryang.