Cyclamen mites ( Steneotarsonemus pallidus) are one of the most serious pests of African violets. Insects & Related PestsĬyclamen Mites: Mites are not insects but are more closely related to spiders. Botrytis often follows mite injury, so controlling this pest aids in controlling this disease. Provide better air circulation, and avoid getting the flowers and foliage wet. Prevention & Treatment: Collect and discard all dead and dying plant material. Leaves, stems, or flowers appear blighted and turn dark brown to gray, often with a fuzzy coating on the surface. Pots of discarded plants should not be reused until they have been thoroughly scrubbed clean and then soaked for 30 minutes in a solution of 1 part household bleach to 9 parts water.īotrytis Blight: Botrytis blight is caused by the fungus Botrytis cinerea and often first appears as small water-soaked lesions on the underside of the leaf. Prevention & Treatment: Prevent disease by always using sterilized potting soil mixes and clean containers when planting. Any of these conditions can contribute to rotting of the crown and roots. The fungi Pythium species and Phytophthora species can cause this problem, especially when plants are watered excessively, have poor drainage, or are planted too deeply. The older leaves droop, and the younger leaves in the center of the plant appear stunted, turn black and die. ![]() DiseasesĬrown & Root Rot: One of the most serious fungal problems of African violet is usually first noticed when the crown and roots of the plant turn soft and mushy. They commonly have disease and pest problems, but most of these can be avoided by following the recommended cultural practices to keep plants healthy, as described in HGIC 1550, African Violet. ![]() Their popularity arises from the fact that they are easy to grow and can bloom for 10 to 12 months of the year. African violets are easily the most popular flowering houseplants in America.
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