Tatebayashi, Gunma is famous for its Azalea Hill Park, Tsutsuji-ga-oka. Motoyama, Kōchi has a flower festival in which the blooming of Tsutsuji is celebrated. Azalea festivals Azalea Festival at Nezu Shrine Japan Symptoms may include vomiting, diarrhea, seizures, laryngeal edema and heart rhythm disturbances, which can lead to complete cardiac arrest and therefore death. If the poison from azalea flowers and leaves enters a cat's stomach, it can cause central nervous system depression, which in turn can lead to multi-organ failure. Bees are deliberately fed on Azalea/ Rhododendron nectar in some parts of Turkey, producing a mind-altering, potentially medicinal, and occasionally lethal honey known as " mad honey". In addition to being renowned for its beauty, the azalea is also highly toxic-it contains andromedotoxins in both its leaves and nectar, including honey from the nectar. Īzaleas and rhododendrons were once so infamous for their toxicity that to receive a bouquet of their flowers in a black vase was a well-known death threat. The azalea is also one of the symbols of the city of São Paulo, Brazil. In Chinese culture, the azalea is known as "thinking of home bush" ( sixiang shu), and is immortalized in the poetry of Du Fu. Cultural significance and symbolism New Jersey Shrewsbury & Raupp 2000 find azaleas can be protected from them by companion planting with an overstory above them. : 199 Pests Īzaleas share the Azalea lace bug ( Stephanitis pyrioides) with many other heath species. Īzaleas share the economically important disease Phytophthora cinnamomi with more than 3000 other plants. They can also be subject to Phytophthora root rot in moist, hot conditions. Hand picking infected leaves is the recommended method of control. Thirty-year-old bush, MD, USA Classification Native American azaleas Īzalea leafy gall can be particularly destructive to azalea leaves during the early spring. Since the late 19th century, in late March and early April, thousands visit to see the azaleas bloom in their full glory. Magnolia is one of the oldest public gardens in America. With encouragement from Charles Sprague Sargent from Harvard's Arnold Arboretum, Magnolia Gardens was opened to the public in 1871, following the American Civil War. From Philadelphia, where they were grown only in greenhouses, John Grimke Drayton (Magnolia's owner) imported the plants for use in his estate garden. 'George Taber'Īccording to azalea historian Fred Galle, in the United States, Azalea indica (in this case, the group of plants called Southern indicas) was first introduced to the outdoor landscape in the 1830s at the rice plantation Magnolia-on-the-Ashley in Charleston, South Carolina. They are planted abundantly as ornamentals in the southeastern US, southern Asia, and parts of southwest Europe. Some species need regular pruning.Īzaleas are native to several continents including Asia, Europe and North America. Azalea seeds can also be collected and germinated.Īzaleas are generally slow-growing and do best in well-drained acidic soil (4.5–6.0 pH). This human selection has produced over 10,000 different cultivars which are propagated by cuttings. Plant enthusiasts have selectively bred azaleas for hundreds of years. Shade tolerant, they prefer living near or under trees. Azaleas bloom in the spring (April and May in the temperate Northern Hemisphere, and October and November in the Southern Hemisphere), their flowers often lasting several weeks. Rhododendron 'Hinodegiri'Īzaleas ( / ə ˈ z eɪ l i ə/) are flowering shrubs in the genus Rhododendron, particularly the former sections Tsutsusi (evergreen) and Pentanthera (deciduous). For other uses, see Azalea (disambiguation).
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