AI: 34.5% Cyazofamid. Segway O Greenhouse and Nursery fungicide is a flowable suspension concentrate formulation that controls pythium, crown and root, and aerial phytophthora, and downy mildews on ornamental plants grown in commercial greenhouses and nurseries. Segway O should be utilized as a protectant fungicide and applied before conditions are favorable for disease development. Depending on disease pressure, Segway O offers protection for a period of 7 to 28 days.