Lontrel Herbicide - 1 Quart (T&O clopyralid version of Sonora, Spur, Stigmata)

Lontrel Herbicide - Selective Broadleaf Control for Turf, Ornamentals & Non-Crop Areas

Lontrel Herbicide delivers powerful, selective postemergence control of hard-to-kill broadleaf weeds, especially species in the legume and composite families, while preserving labeled turfgrasses and many desirable ornamentals when used as directed. Powered by clopyralid, Lontrel provides systemic activity that moves to growing points and roots for thorough, lasting control, making it a trusted choice for golf, sports turf, landscapes, rights-of-way, and industrial non-crop sites.

Key Benefits

• Highly selective on turf - targets problem broadleaf weeds while maintaining cool- and warm-season turf quality.
• Excellent on tough species - strong activity on clover, thistles, knapweeds, vetch, and other composite/legume weeds.
• Systemic, root-to-shoot control - translocates within plants to help prevent regrowth from underground structures.
• Flexible application - labeled for broadcast or spot treatments; tank-mix compatible to broaden spectrum where allowed.
• Program fit - integrates smoothly into season-long weed management with reduced re-treat risk on labeled species.

Technical Information

• Active Ingredient: Clopyralid (amine salt)
• Formulation: Soluble liquid/specialty herbicide
• Herbicide Group: 4 (Synthetic auxin/growth regulator)
• EPA Reg. No.: 62719-305

Use Sites & Target Weeds

For use on: Established turf (golf course fairways/roughs/tees, sports turf, commercial lawns, sod farms), non-residential landscapes, non-crop and industrial sites, roadsides/rights-of-way, and labeled ornamental sites (see label for sensitive species and site restrictions).

Controls/Suppresses: Clover spp., Canada thistle, knapweeds, vetch, oxeye daisy, wild carrot, and other listed composite/legume broadleaf weeds; see the product label for a complete, site-specific weed list.

Application Rates & Timing

Approximate use rate is 1/3 to 1 pint per acre. Apply postemergence to actively growing weeds at labeled broadcast or spot-treatment rates by target species, turf type, and site. Use adequate spray volume for uniform coverage. Avoid drift to desirable broadleaf ornamentals and sensitive crops. Follow all reseeding/overseeding intervals, clipping disposal guidance, and site-specific restrictions provided on the label. Rotate modes of action and incorporate cultural practices for durable, season-long control.

ALWAYS READ AND FOLLOW LABEL DIRECTIONS BEFORE USE.

Resources

Product Overview (Corteva)
Lontrel Label (PDF)
Safety Data Sheet (SDS PDF)

Why Professionals Choose Lontrel

Lontrel's clopyralid chemistry delivers reliable, selective control of the broadleaf species that most threaten turf performance and site aesthetics, backed by systemic activity, flexible use patterns, and strong program compatibility.