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
- Boscalid
- Chemical class
- Pyridine-carboxamide (anilide); FRAC Group 7 succinate dehydrogenase inhibitor.[2][1]
- Mode of action
- FRAC Group 7: SDHI fungicides: succinate dehydrogenase inhibitors (respiration, complex II)[2]
- Signal word
- Emerald Fungicide: Warning[1]
Golf courses yes, home lawns no
For turf, Emerald is limited to golf courses. The label excludes residential lawns, sod farms and seed production, though ornamentals in residential and commercial landscapes may be treated.[1]
Annual limits
Golf turf can receive at most 1.1 oz per 1,000 sq ft a year (48 oz per acre). Ornamental sites are capped at 3.0 lb, also 48 oz, per acre a year. Never use it on food or feed crops.[1]
Where it is used
Spray before disease starts or at the earliest signs; the label says Emerald works best as a preventive.[1]
Never make more than two Emerald applications in a row. Switch to an effective fungicide from a different group, and don't rotate with other Group 7 products.[1]
On turf, let the leaves dry before mowing or watering. Test a small area first, since tolerance hasn't been checked on every grass.[1]
On ornamentals, don't add organosilicone adjuvants, which can injure some species. Keep spray drift away from Concord, Niagara and several other listed grape varieties.[1]
Products and registrations
| Product | Registrant | EPA Reg. No. | Active % | Formulation | Signal word |
|---|---|---|---|---|---|
| Emerald Fungicide[1] | BASF Corporation | 7969-196 | 70.0% | water-dispersible granule (dry flowable) | Warning |
Label rates
| Product | Use | Pests | Rate |
|---|---|---|---|
| Emerald Fungicide | Golf course turf | Dollar spot | 0.13–0.18 oz product per 1,000 sq ft[1] Every 14 to 28 days in 2 to 4 gallons of water per 1,000 sq ft. Bentgrass dead spot gets 0.18 oz every 14 days. |
| Emerald Fungicide | Ornamentals in nurseries, greenhouses and residential or commercial landscapes | Powdery mildews, Alternaria leaf spots, Monilinia blossom blight | 4–8 oz product per 100 gallons of water[1] Every 7 to 10 days for powdery mildew and 7 to 14 days for leaf spot and blossom blight; up to 28 days when disease pressure is low. |
| Emerald Fungicide | Ornamentals in nurseries, greenhouses and landscapes | Botrytis rot | 8–16 oz product per 100 gallons of water[1] Spray to runoff every 7 to 14 days, starting before symptoms. |
Safety and environmental hazards
People
Signal word WARNING: causes substantial but temporary eye injury, and is harmful if absorbed through skin or swallowed. Repeated skin contact may cause allergic reactions. Handlers wear eye protection, long sleeves, long pants, shoes, socks and chemical-resistant gloves.[1]
Pets
For non-farm uses, the label says not to enter or let others enter treated areas until sprays have dried. Keep pets out until then.[1]
Bees and pollinators
Emerald's label has no bee or pollinator warning.[1]
Fish and water
Drift and runoff may harm aquatic organisms near treated areas. Boscalid is known to leach to groundwater in permeable soils, so avoid spraying when rain or irrigation is expected within 48 hours.[1]
Common questions
- Can I spray Emerald fungicide on my lawn for dollar spot?
- No. Its turf use is restricted to golf course turfgrass; residential lawns are specifically excluded.[1]
- Why does boscalid carry a WARNING signal word?
- The label says the product causes substantial but temporary eye injury, which is why goggles, a face shield or safety glasses are required.[1]
- Can I use it on roses or flowers with powdery mildew?
- The label allows ornamentals in residential and commercial landscapes at 4 to 8 oz per 100 gallons. Test a few plants first, since not every variety has been checked.[1]
Sources
- U.S. EPA Pesticide Product Label System, “Emerald Fungicide label, EPA Reg. No. 7969-196 (EPA-stamped, Jan. 6, 2026).” www3.epa.gov/pesticides/chem_search/ppls/007969-00196-20260106.pdf (accessed 2026-10-06)
- Fungicide Resistance Action Committee, “FRAC Code List 2025.” www.frac.info/media/ljsi3qrv/frac-code-list-2025.pdf (accessed 2026-10-06)