Herbicide label
QUINSTAR
QUINSTAR (EPA 42750-88) is a Group 4 quinclorac herbicide labeled for 6 crops. The label lists 24 controlled weeds, plus partial-control, suppression, and partner-control categories.
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“QUINSTAR® herbicide is a systemic herbicide with plant uptake through both foliage and roots.”
QUINSTAR label facts
- Product QUINSTAR
- EPA Reg. No. 42750-88
- Registrant Albaugh, LLC
- Active ingredient quinclorac
- MOA group 4
Crops on the QUINSTAR label
QUINSTAR is labeled for these 6 crops and uses, per the EPA label.
Need the rate or timing for one of these? Filter every label by your crop, free.
Weeds on the QUINSTAR label
The QUINSTAR label names 41 weeds and rates each by how the product handles it: full control, partial control, suppression, or control with a tank-mix partner. A weed can fall at more than one level, because control varies by crop, rate, and timing.
Controls
full control24- barnyardgrass, common
- bedstraw, catchweed
- bindweed, field
- bindweed, hedge
- clover species
- crabgrass, large
- eclipta
- volunteer flax
- foxtail, giant
- foxtail, green
- foxtail, yellow
- jointvetch, indian
- jointvetch, northern
- junglerice
- prickly lettuce
- morningglory, cypressvine
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, palmleaf
- morningglory, pitted
- morningglory, purple moonflower
- morningglory, tall
- sesbania, hemp
- signalgrass, broadleaf
Partial control
partial1- alligatorweed
Suppression
suppression12- alligatorweed
- dandelion
- kochia
- lambsquarters, common
- ragweed, common
- ragweed, giant
- sowthistle, perennial
- spurge, leafy
- sunflower, wild
- thistle, canada
- thistle, russian
- velvetleaf
Controls with a tank-mix partner
needs partner8- cocklebur, common
- dayflower spp.
- morningglory, entireleaf
- morningglory, pitted
- morningglory, purple moonflower
- nutsedge, yellow
- red rice
- sprangletop
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
QUINSTAR rates and plant-back
The label answers both with a table, not a single number. Here is what drives each answer.
Application rate
Your rate depends on your crop and your soil texture.
Get the rate for your field: build a program and FieldMarshal gives you the exact per-acre rate for your crop from the label line.
Plant-back and rotation
Your interval depends on your application rate, the rotational crop, and your state, region, and rainfall — some intervals differ in ID, MT, NV, OR, UT, WA, and WY.
Get the interval for your rotation: build a program and FieldMarshal gives you the exact plant-back for your rotational crop from the label line.
QUINSTAR FAQ
What weeds does QUINSTAR control?
The QUINSTAR label names 41 weeds, including common barnyardgrass, catchweed bedstraw, field bindweed, hedge bindweed, clover species, and large crabgrass. Control varies by crop, rate, and timing.
What crops is QUINSTAR labeled for?
QUINSTAR is labeled for 6 crops and uses, including wheat, sorghum, rice, grass seed, and fallow.
What is the active ingredient in QUINSTAR? Is it a generic?
QUINSTAR's active ingredient is quinclorac (MOA Group 4). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.
What's the plant-back interval after QUINSTAR?
It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal gives you the exact interval for your rotation from the label line, so you can verify it.
Build a program →Can I tank-mix QUINSTAR?
It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and gives the condition on each, so you can verify it.
Build a program →Plan in minutes, not hours.
Start with QUINSTAR and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and checked against the label.
Free account and label filter. Building a program is paid, metered by use, so you pay only for what you build.
Sources
Last updated 2026-07-14.