Care of African Violets - Smithsonian Gardens
https://gardens.si.edu/learn/educational-resources/plant-care-sheets/care-of-african-violets/
African violets are well adapted to indoor environments. They prefer a temperature between 65°F and 80°F with about 80% humidity. It is important to avoid temperature and humidity fluctuations, including sudden drafts. To provide an adequately humid environment, you may want to use a humidifier or place pots in a tray filled with gravel and water.
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