Botrytis

A fungal disease affecting many different types of herbaceous and woody plants, botrytis strikes during cool, damp weather in areas where air circulation is poor. On orchids, the disease, caused by Botrytis cinerea, causes unsightly brown spotting of blooms. The fungus most often affectsPhalaenopsis and Cattleyas, but may be found in a wide range of…

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Aphids

Among the most common orchid pests, aphids are slow-moving, soft-bodied insects related to scale. Usually less than 1/8-inch long, greenish white or black, aphids have soft, pear-shaped bodies, long legs, antennae, and sucking mouthparts to feed on plant juices. Most are wingless, but winged versions appear to migrate between plants when a colony becomes crowded..…

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