Avid, Subdue and Conserve This 3 bottle arsenal, is about all you need to combat diseases in African Violets and gesneriads. Also orchids. Priced with shipping included. We would find it very difficult growing violets without these "essentials" Complete instructions and data sheets included. A little of each product goes a long way. Only one drop of Subdue is needed to make one qt of drench. Do not make it stronger.