Herbicide label reference
Q4 Plus
Quinclorac + sulfentrazone + 2,4-D + dicamba soluble liquid · EPA Reg. No. 2217-930
What’s in this formulation
- Dicamba, dimethylamine salt
- 1.49%
- 2,4-D, dimethylamine salt
- 11.81%
- Quinclorac
- 8.43%
- Sulfentrazone
- 0.69%
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.
- Do not use on bahiagrass, bentgrass, carpetgrass, centipedegrass or St. Augustinegrass. Fine fescue use is only in a mixed cool-season stand.
- Warm-season turf has separate directions. Apply when weeds are young and actively growing; follow the leaf/tiller-stage chart, repeat-treatment, state and seasonal restrictions.
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.
- 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.
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: PBI/GORDON CORPORATION.
Source label registration: 2217-930. Accepted 2020-11-20. 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 |
|---|---|---|
| Barnyardgrass | Postemergence Listed control | Coverage depends on the leaf/tiller stage in Table 1; some stages require follow-up applications or have reduced control. PDF pp. 10–11; Section 9 and Table 1, growth stages for optimum control |
| Bedstraw | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Bindweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Black medic | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Blue-eyed mary | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Broadleaf plantain | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Broadleaf signalgrass | Postemergence Listed control | Coverage depends on the leaf/tiller stage in Table 1; some stages require follow-up applications or have reduced control. PDF pp. 10–11; Section 9 and Table 1, growth stages for optimum control |
| Buckhorn plantain | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Bull thistle | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Carolina geranium | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Carpetweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Chicory | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Cinquefoil | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Clover | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Common burdock | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Common catsear | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Common chickweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Common lespedeza | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Common mallow | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Common speedwell | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Creeping beggarweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Creeping buttercup | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Creeping woodsorrel | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Curly dock | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Dandelion | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Dayflower | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Deadnettle | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Dock | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Dogfennel | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Dollarweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Doveweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| English daisy | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Field bindweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Field oxeye-daisy | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Florida betony | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Florida pusley | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Giant foxtail | Postemergence Listed control | Coverage depends on the leaf/tiller stage in Table 1; some stages require follow-up applications or have reduced control. PDF pp. 10–11; Section 9 and Table 1, growth stages for optimum control |
| Green foxtail | Postemergence Listed control | Coverage depends on the leaf/tiller stage in Table 1; some stages require follow-up applications or have reduced control. PDF pp. 10–11; Section 9 and Table 1, growth stages for optimum control |
| Ground ivy | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Groundsel | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Hawkweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Healall | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Henbit | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Knotweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Lambsquarters | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Large crabgrass | Postemergence Listed control | Coverage depends on the leaf/tiller stage in Table 1; some stages require follow-up applications or have reduced control. PDF pp. 10–11; Section 9 and Table 1, growth stages for optimum control |
| Lawn burweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Matchweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Morningglory (label group) | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Mouseear chickweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Old world diamond flower | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Parsley piert | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Pennsylvania smartweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Pepperweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Pigweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Pineappleweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Plantain | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Poison ivy | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Poison oak | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Prickly lettuce | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Puncturevine | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Purple cudweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Purslane | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Ragweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Red sorrel | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Redstem filaree | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Redweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Shepherd's purse | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Slender speedwell | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Smooth crabgrass | Postemergence Listed control | Coverage depends on the leaf/tiller stage in Table 1; some stages require follow-up applications or have reduced control. PDF pp. 10–11; Section 9 and Table 1, growth stages for optimum control |
| Spotted catsear | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Spurge | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Thistle | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Thymeleaf speedwell | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Virginia buttonweed | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| White clover | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| White heath aster | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| White prairie aster | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Whitestem filaree | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Wild carrot | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Wild garlic | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Wild geranium | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Wild lettuce | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Wild mustard | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Wild onion | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Wild strawberry | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Wild violet | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Yarrow | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Yellow foxtail | Postemergence Listed control | Coverage depends on the leaf/tiller stage in Table 1; some stages require follow-up applications or have reduced control. PDF pp. 10–11; Section 9 and Table 1, growth stages for optimum control |
| Yellow nutsedge | Postemergence Listed control | Coverage depends on the leaf/tiller stage in Table 1; some stages require follow-up applications or have reduced control. PDF pp. 10–11; Section 9 and Table 1, growth stages for optimum control |
| Yellow rocket | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |
| Yellow woodsorrel | Postemergence Conditional activity | This list says control or suppression without separate outcomes. Follow the growth-stage chart and repeat-application instructions. PDF p. 13; Section 12, Weeds Controlled |