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The seeds and leaves are mildly poisonous for people and animals, but are readily eaten by birds. [187] Rhododendron spp. azalea: Ericaceae: All parts are poisonous and cause nausea, vomiting, depression, breathing difficulties, and coma, though it is rarely fatal.
Azalea leafy gall can be particularly destructive to azalea leaves during the early spring. Hand picking infected leaves is the recommended method of control. [4] They can also be subject to Phytophthora root rot in moist, hot conditions. [5] Azaleas share the economically important disease Phytophthora cinnamomi with more than 3000 other plants.
Rhododendron luteum, the yellow azalea or honeysuckle azalea, is a species of flowering plant in the heath family Ericaceae, native to southeastern Europe and southwest Asia. In Europe, it occurs from southern Poland and Austria, south through the Balkans , and east to southern Russia; and in Asia, east to the Caucasus .
Azaleas put on quite a show in the spring if they have been protected well during winter. Learn how to protect azaleas in every hardiness zone in winter.
Some species of rhododendron are poisonous to grazing animals because of a toxin called grayanotoxin in their pollen and nectar. People have been known to become ill from eating mad honey made by bees feeding on rhododendron and azalea flowers.
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Most are in the United States, with one species found in Canada and one being found in Mexico. North American azaleas are commonly confused with azaleas of Asian origin, the evergreen azaleas. North American azaleas are deciduous and produce two types of buds. One is a larger and produces about 20 flowers while the other bud produces a leafy ...
Azaleas. Are poinsettias poisonous to dogs? Here's how toxic the holiday plant is. How to cat-proof your Christmas tree. While some owners may worry about their cats eating fallen needles, others ...