Herbicide label reference
Recognition
20.4% trifloxysulfuron-sodium water-dispersible granules · EPA Reg. No. 100-1658
What’s in this formulation
- Trifloxysulfuron-sodium (monohydrate)
- 20.4%
Active ingredient percentages are by weight. Compare the exact registration number and formulation on your container.
Label scope and conditions
EPA-accepted master label, residential-lawn use only. Marketed labels may use a subset of these claims. Match the registration and formulation, and follow the label on your container; this reference is not a replacement for it.
- Centipedegrass is deleted in the accepted label amendment and is excluded here. Use only the listed grasses; check Sections 5 and 7 and California limitations.
- Apply postemergence to actively growing weeds. Repeat applications and a label adjuvant may be needed. Virginia buttonweed coverage is for seedlings.
This page summarizes coverage and does not provide application rates or mixing instructions. Use the complete label on your container for directions, protective equipment, reentry, environmental precautions, and restrictions.
Listed lawn grasses
- Bermudagrass (check cultivar) — Established turf only. Follow the grass-specific rate and cultivar restrictions in the label.
- Zoysiagrass (check cultivar) — Established turf only. Follow the grass-specific rate and cultivar restrictions in the label.
- Buffalograss — Established turf only. Follow the grass-specific rate and cultivar restrictions in the label.
- St. Augustinegrass (cultivar must be checked) — Established turf only. Follow the grass-specific rate and cultivar restrictions in the label.
- Kikuyugrass — Established turf only. Follow the grass-specific rate and cultivar restrictions in the label.
A listed grass is not an unconditional compatibility claim. Cultivar, establishment, temperature, stress, timing, and rate restrictions still apply.
Source record
Current registrant in the checked EPA record: SYNGENTA CROP PROTECTION, LLC.
Source label registration: 100-1658. Accepted 2024-02-16. Transferred registrations can have a source label bearing the prior registration number.
Residential-lawn label claims
Weeds and coverage
“Conditional activity” flags undifferentiated control/suppression or unresolved weed identity and label conditions. “No activity” is an explicit label entry. An absent weed is not evidence that the product cannot affect it.
| Weed | Timing & activity | Conditions & evidence |
|---|---|---|
| Annual bluegrass | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Annual sedge | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Bahiagrass | Postemergence Suppression | PDF p. 24; Section 6.2, suppression footnote |
| Bentgrass | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Black medic | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Broadleaf signalgrass | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Carolina geranium | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Carpetweed | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Catsear dandelion | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Clover | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Cocks-comb kyllinga | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Common chickweed | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Corn speedwell | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Creeping indigo | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Dallisgrass | Postemergence Suppression | PDF p. 24; Section 6.2, suppression footnote |
| Dandelion | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Dichondra | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Dollarweed | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| English daisy | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Field pansy | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Globe sedge | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Green kyllinga | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Ground ivy | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Hairy buttercup | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Henbit | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Hop clover | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Khakiweed | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Lawn burweed | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Little barley | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Mallow | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Mouseear chickweed | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Narrowleaf cudweed | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Oxalis | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Parsley piert | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Purple nutsedge | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Rabbitfoot clover | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Rescuegrass | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Rough bluegrass | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Ryegrass (label group) | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Shepherd's purse | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Spotted spurge | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Tall fescue | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Torpedograss | Postemergence Suppression | PDF p. 24; Section 6.2, suppression footnote |
| Virginia buttonweed | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Wild garlic | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |
| Yellow nutsedge | Postemergence Listed control | Follow weed-group rates and repeat-application directions; Virginia buttonweed is limited to seedlings. PDF pp. 24–26; Sections 6.1, 6.2 and 7.1 |