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Segway O Greenhouse and Nursery Fungicide
Segway O Greenhouse and Nursery Fungicide is a broad-spectrum, systemic fungicide that is special for its novel mode of action and highly effective control of destructive root and foliar diseases in commercial greenhouse and nursery crops at very low use rates.
03/22/26
Segway O Greenhouse and Nursery Fungicide, manufactured by OHP, is a professional preventative fungicide concentrate that provides targeted control of some of the most destructive and difficult-to-manage diseases on ornamentals grown in commercial greenhouses and nurseries.
This suspended concentrate fungicide is engineered specifically to interrupt diseases such as pythium, phytophthora, and downy mildew before they gain a foothold. It creates a defensive barrier that prevents spores and disease organisms from successfully establishing on roots, crowns, or foliage for 7 to 28 days.
Segway O Greenhouse and Nursery Fungicide is a professional-grade, protectant fungicide designed to provide reliable, preventive control of pythium, crown and root phytophthora, aerial phytophthora, and downy mildews in commercial greenhouse and nursery production. For growers who value prevention, predictability, and long-term plant health, this product is a trusted fungicide that earns its place in any serious disease management program.
Tools Needed
A backpack sprayer or handheld pump sprayer will be needed.
How to Use
- Step 1: For pythium crown and root rots and damping-off on ornamentals, mix 1.5 to 3.0 fl. oz. of Segway O Greenhouse and Nursery Fungicide per 100 gallons of water. For phytophthora crown and root rots and foliar blights on ornamentals, use 3.0 to 6.0 fl. oz. of product per 100 gallons of water. To control downy mildew on ornamentals, apply 2.1 to 3.5 fl. oz. of product per 100 gallons of water. Refer to the product label for specific application rates and restrictions.
- Step 2: Fill the sprayer with half the amount of water, add the proper amount of product, and pour in the remaining half of the water. Close the tank lid and shake until the solution is well-mixed.
- Step 3: For foliar applications, apply sufficient spray solution to thoroughly wet the foliage to the point of run-off. For drench applications to containerized plants, use enough of the specified water solution to wet the root zone with minimal runoff. For soil surface applications made in outdoor nurseries, irrigate with at least ½ inch of water if rainfall does not occur within 24 hours.
Where to Use
Segway O Greenhouse and Nursery Fungicide can be used on ornamental plants grown in commercial greenhouses and nurseries.
When to Use
Applications should begin when conditions are favorable for disease development or when plants first exhibit disease symptoms, from germination to mature crop.
Safety Information
Segway O Greenhouse and Nursery Fungicide is safe for people and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product.
Keep children, pets, and unprotected persons out of the treated area until sprays have dried.
Special Considerations
Application by home-owners to residential turf is prohibited.
| Restricted Use | No |
|---|---|
| Availability | Online |
| Signal Word | CAUTION |
| Keith's Pro Tip | "Segway O Greenhouse and Nursery Fungicide is generally compatible with other insecticides, fungicides, fertilizers and micronutrient products provided sufficient free water is available for dispersion of all the tank mix products. However, the physical compatibility of Segway O Greenhouse and Nursery Fungicide with tank mix partners should be evaluated before use. A jar test should be conducted with intended tank-mix pesticides prior to preparation of large volumes." |
| Time to Kill | Depending upon the level of disease pressure, good protection of the crop against disease can be expected over a period of 7 to 28 days. |
| Chemical Type | Fungicide |
| Formulation | Suspended Concentrate |
| Application Methods | Broadcast Spray, Drench Treatment |
| Product Drawbacks | Not all plants have been tested. |
| Active Ingredient | Cyazofamid 34.5% |
| Application Equipment | Backpack Sprayer, Pump Sprayer |
| Mix Rate | For pythium crown and root rots and damping-off on ornamentals, mix 1.5 to 3.0 fl. oz. of Segway O Greenhouse and Nursery Fungicide per 100 gallons of water. For phytophthora crown and root rots and foliar blights on ornamentals, use 3.0 to 6.0 fl. oz. of product per 100 gallons of water. To control downy mildew on ornamentals, apply 2.1 to 3.5 fl. oz. of product per 100 gallons of water. |
| Use Sites | Outdoors |
| Yield | Coverage will vary. |
| EPA Registration No. | 71512-13-59807 |
| Shelf Life | Segway O Greenhouse and Nursery Fungicide will last for 3 years when stored in a dry, clean area. |
| Children or pets? | No |
| Property Characteristics | None |
| Availability | Online |
| Restricted Use | No |
| Brand | OHP |
| Keith's Pro Tips | "Segway O Greenhouse and Nursery Fungicide is generally compatible with other insecticides, fungicides, fertilizers and micronutrient products provided sufficient free water is available for dispersion of all the tank mix products. However, the physical compatibility of Segway O Greenhouse and Nursery Fungicide with tank mix partners should be evaluated before use. A jar test should be conducted with intended tank-mix pesticides prior to preparation of large volumes." |
| Product Drawbacks | Not all plants have been tested. |
| Target Pests | Pythium, Phytophthora and Downy mildew. |
| Application Equipment | Backpack Sprayer, Pump Sprayer |
| Application Methods | Broadcast Spray, Drench Treatment |
| Active Ingredient | Cyazofamid 34.5% |
| Product Type | Fungicide |
| Formulation | Suspended Concentrate |
| Application Rate | For pythium crown and root rots and damping-off on ornamentals, mix 1.5 to 3.0 fl. oz. of Segway O Greenhouse and Nursery Fungicide per 100 gallons of water. For phytophthora crown and root rots and foliar blights on ornamentals, use 3.0 to 6.0 fl. oz. of product per 100 gallons of water. To control downy mildew on ornamentals, apply 2.1 to 3.5 fl. oz. of product per 100 gallons of water. |
| Shelf Life | Segway O Greenhouse and Nursery Fungicide will last for 3 years when stored in a dry, clean area. |
| Yield | Coverage will vary. |
| Use Sites | Outdoors |
| Time to Kill | Depending upon the level of disease pressure, good protection of the crop against disease can be expected over a period of 7 to 28 days. |
| EPA Registration # | 71512-13-59807 |
*Price does not include freight. We guarantee our rate plus shipping will be less than anyone else's price.




