The label is the law. Rates and restrictions below are taken from the product labels listed under Sources. Your product's own label governs; read it before you mix or apply. Mixing calculator · Disclaimer
- Active ingredient
- Tebuconazole (CAS 107534-96-3)
- Chemical class
- Triazole; FRAC Group 3 DMI fungicides (demethylation inhibitors in sterol biosynthesis).[2]
- Mode of action
- FRAC Group 3: DMI fungicides: demethylation inhibitors in sterol biosynthesis[2]
- Signal word
- Tebuconazole Rose & Flower Granule (sold as Bayer Advanced Disease Control Ready-To-Use Granules): Caution[1]
Where not to use it
This granule is for outdoor residential use only. Don't put it on plants grown for food, in pots or flower boxes, or on waterlogged or frozen soil.[1]
The label also says it is not for sale, distribution or use in New York State.[1]
How a soil-applied fungicide works
Water carries tebuconazole into the root zone, where roots take it up and move it through the plant, including new growth. The label says rain or watering can't wash this systemic protection off.[1]
Where it is used
Start in spring when plants are actively growing, or at planting. On established plants, wait until new growth appears.[1]
Sprinkle granules evenly under the branches, work them into the top 1 to 2 inches of soil, and water thoroughly. Pull mulch back first so the product reaches the root zone.[1]
Reapply every 6 weeks for 3 applications a year. In sandy soil where disease is frequent, the interval can drop to 4 to 5 weeks for 4 applications, except on flower beds.[1]
Measure with the product's cap, never with measuring cups or spoons used for food or drinking water.[1]
Products and registrations
| Product | Registrant | EPA Reg. No. | Active % | Formulation | Signal word |
|---|---|---|---|---|---|
| Tebuconazole Rose & Flower Granule (sold as Bayer Advanced Disease Control Ready-To-Use Granules)[1] | Bayer CropScience LP | 92564-66 | 1.06% | ready-to-use granule with fertilizer | Caution |
Label rates
| Product | Use | Pests | Rate |
|---|---|---|---|
| Tebuconazole Rose & Flower Granule (sold as Bayer Advanced Disease Control Ready-To-Use Granules) | Roses | Black spot, powdery mildew, rust | 2 oz product per plant[1] That's one large capful filled to the inner circle, or four rounded tablespoons. Repeat every 6 weeks in the growing season. |
| Tebuconazole Rose & Flower Granule (sold as Bayer Advanced Disease Control Ready-To-Use Granules) | Azaleas, camellias, rhododendrons and other landscape shrubs | Black spot, powdery mildew, rust, southern blight | 1 oz product per foot of plant height[1] Half a large capful for each foot of height, sprinkled under the branches. |
| Tebuconazole Rose & Flower Granule (sold as Bayer Advanced Disease Control Ready-To-Use Granules) | Flower beds | Powdery mildew, rust, southern blight | 1 oz product per 12 sq ft of bed[1] Half a large capful per 3 by 4 foot area. Flower beds are limited to 3 applications a year. |
Safety and environmental hazards
People
Signal word CAUTION: causes moderate eye irritation. Wear a long-sleeved shirt, long pants, shoes, socks and waterproof gloves, and wash your hands after handling.[1]
Pets
Keep people and pets out of the treated area until the granules have been watered in and the area has dried.[1]
Bees and pollinators
The label has no bee or pollinator warning. The granules are applied to the soil and watered in.[1]
Fish and water
Toxic to aquatic invertebrates. Don't apply near lakes, streams, rivers or ponds, and sweep stray granules off driveways and sidewalks back onto the bed.[1]
Common questions
- How much Bayer Disease Control granules per rose?
- 2 oz per rose, which is one large capful filled to the inner circle or two small capfuls.[1]
- How long does tebuconazole granule protection last?
- The label claims up to 6 weeks of protection against listed diseases, which is why it is reapplied every 6 weeks.[1]
- Can I use it on vegetables or potted roses?
- No. The label bars use on plants grown for food and on plants in pots, flower boxes or other containers.[1]
Sources
- U.S. EPA Pesticide Product Label System, “Tebuconazole Rose & Flower Granule label, EPA Reg. No. 92564-66 (EPA-stamped, Sept. 1, 2016).” www3.epa.gov/pesticides/chem_search/ppls/072155-00117-20160901.pdf (accessed 2026-10-06). EPA's site files this label under the product's earlier registration number, 72155-117.
- Fungicide Resistance Action Committee, “FRAC Code List 2025.” www.frac.info/media/ljsi3qrv/frac-code-list-2025.pdf (accessed 2026-10-06)