Herbicide label reference
Echelon 4SC
27.3% prodiamine + 13.6% sulfentrazone suspension concentrate · EPA Reg. No. 101563-294
What’s in this formulation
- Prodiamine
- 27.3%
- Sulfentrazone
- 13.6%
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.
- Preemergence and postemergence weed lists differ. Some postemergence control rates exceed the rate allowed on sensitive cool-season grasses; those combinations provide suppression.
- Use on established turf. Creeping bentgrass must not be mown below the label height; fine-fescue and zoysiagrass cultivar injury is possible. Observe the label’s reseeding intervals.
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
- Kentucky bluegrass — Established turf only. Follow the grass-specific rate and cultivar restrictions in the label.
- Tall fescue — Established turf only. Follow the grass-specific rate and cultivar restrictions in the label.
- Fine fescues — Established turf only. Follow the grass-specific rate and cultivar restrictions in the label.
- Perennial ryegrass — Established turf only. Follow the grass-specific rate and cultivar restrictions in the label.
- Creeping bentgrass — Established turf only. Follow the grass-specific rate and cultivar restrictions in the label.
- 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.
- Centipedegrass — Established turf only. Follow the grass-specific rate and cultivar restrictions in the label.
- St. Augustinegrass (cultivar must be checked) — Table 1A has a separate split-application limit. Weeds requiring the higher single-application rate for control are suppression only on this grass. Temporary discoloration may occur.
- Bahiagrass — 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.
- Seashore paspalum — 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.
- Carpetgrass — 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: ENVIRONMENTAL SCIENCE U.S., LLC.
Source label registration: 279-3323. Accepted 2022-08-25. 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 | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Annual spurge (label group) | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Barnyardgrass | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Bittercress | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Black medic | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Broadleaf signalgrass | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Buckhorn plantain | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Buttercups | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Carolina geranium | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Carolina geranium | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Carpetweed | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Carpetweed | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Cinquefoil | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Clover | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Common chickweed | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Common chickweed | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Common lambsquarters | Postemergence Suppression | Suppression only, as listed in Table 3. This label does not list control of common lambsquarters. PDF pp. 14; turf weed table, Control/Suppress columns |
| Common lambsquarters | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Common lespedeza | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Common mallow | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Common purslane | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Common purslane | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Creeping woodsorrel | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Crowfootgrass | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Cudweed | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Curly dock | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Cylindric sedge | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Dandelion | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Evening primrose | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Fall panicum | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Fiddleneck | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Filaree | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Florida pusley | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Florida pusley | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Foxtail (label group) | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Globe sedge | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Goldenrod | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Goosegrass | Postemergence Listed control | Crabgrass and goosegrass control is limited to the one-to-four-leaf stage. PDF pp. 14; turf weed table, Control/Suppress columns |
| Goosegrass | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Ground ivy | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Hairy bittercress | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Henbit | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Henbit | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Itchgrass | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Kochia | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Kochia | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Large crabgrass | Postemergence Listed control | Control is limited to newly emerged plants in the one-to-four-leaf stage; follow the rate permitted for the lawn grass. PDF pp. 14; turf weed table, Control/Suppress columns |
| Large crabgrass | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Lawn burweed | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| London rocket | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Lovegrass | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Mouseear chickweed | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Mouseear chickweed | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Parsley piert | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Pennsylvania smartweed | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Pineappleweed | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Prostrate knotweed | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Prostrate knotweed | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Prostrate spurge | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Prostrate spurge | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Puncture weed | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Red sorrel | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Redroot pigweed | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Redroot pigweed | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Redweed | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Smooth crabgrass | Postemergence Listed control | Control is limited to newly emerged plants in the one-to-four-leaf stage; follow the rate permitted for the lawn grass. PDF pp. 14; turf weed table, Control/Suppress columns |
| Smooth crabgrass | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Speedwell | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Speedwell | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Spotted spurge | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Sprangletop | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Star of bethlehem | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Surinam sedge | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Texas panicum | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Texas sedge | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Tumble pigweed | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Velvetleaf | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Wild garlic | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Wild onion | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Wild violet | Postemergence Suppression | PDF pp. 14; turf weed table, Control/Suppress columns |
| Witchgrass | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Woolly cupgrass | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Yellow nutsedge | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Yellow nutsedge | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |
| Yellow woodsorrel | Postemergence Listed control | Control requires the higher single-application rate in Table 3 footnote 1. Lower rates allowed on sensitive grasses, including St. Augustinegrass, provide suppression. Follow the grass-specific limit in Tables 1 and 1A. PDF pp. 14; turf weed table, Control/Suppress columns |
| Yellow woodsorrel | Preemergence Listed control | Apply before germination. Mouseear chickweed and yellow woodsorrel are covered from seed only; use the label’s weed-specific timing. PDF pp. 13; residential-lawn weed table |