NC State Extension Publications


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Trade Name: Freehand Common Name: dimethenamid-p + pendimethalin Formulation: 1.75 GR (0.75 + 1%)

Preemergence control of most annual broadleaf weeds, annual grasses and yellow nutsedge in container and field-grown woody nursery stock, landscape ornamentals and groundcovers.

Amount of Active Ingredient Amount by Formulation
Per Acre 1.75 to 3.5 lb 100 to 200 lb
Per 1,000 sq. ft. 2.3 to 4.6 lb

Major Weeds Controlled

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Many annual weeds including annual grasses, annual sedges, spurge, oxalis, doveweed, willowherb and many others. Higher doses are required for bittercress, groundsel, sowthistle, and marsh parsley control. Suppression of eclipta, phyllanthus, and yellow nutsedge.

Major Weeds Not Controlled

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Purple nutsedge, evening primrose, morningglory.

For Best Results

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Apply to weed free soil or substrates. Irrigate soon after application.

Cautions and Precautions

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Injury to some species of herbaceous ornamentals has been reported including rudbeckia, stachys, begonia, muhlenbergia, and Pennisetum setaceum. Do use in propagation or liner production. Applications to newly transplanted rooted cuttings or seedlings of loropetalum, Lavendula, wax myrtle (seedlings) can stunt plant growth. Delay applications to these species until plants are well established.

Residual Activity

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In containers, 6 to 8 weeks of residual control of susceptible species has been observed. In soil (landscape of field nursery), up to 12 weeks of residual control can be expected. Weeds requiring higher doses will be controlled for shorter periods of time.

Volatility and Leaching Potential

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Pendimethalin: slight loss from the soil surface can result from photodegradation and volatility. Irrigation soon after application will limit these losses. Strongly adsorbed to soil organic matter and clay and, therefore, not leached. Dimethenamid-p: moderate volatility and leaching potential but adsorbed strongly to soil organic matter limiting leaching.

Symptoms and Mode of Action

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Dimethenamid-p inhibits lipid synthesis. Injury symptoms include crinkling of new growth, new leaves remaining “rolled” and not unfurling normally, and general stunting. Pendimethalin inhibits root growth causing swollen, club-shaped roots. HRAC Groups K1 and K3; WSSA Groups 3 and 15.

Additional Information

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Worker Protection Standards REI: 24 hours
PPE: coveralls, chemical resistant gloves, shoes plus socks, protective eyewear
Manufacturer: BASF EPA Reg. # 7969-273

Publication date: Nov. 18, 2014
Revised: April 14, 2022

Recommendations for the use of agricultural chemicals are included in this publication as a convenience to the reader. The use of brand names and any mention or listing of commercial products or services in this publication does not imply endorsement by NC State University or N.C. A&T State University nor discrimination against similar products or services not mentioned. Individuals who use agricultural chemicals are responsible for ensuring that the intended use complies with current regulations and conforms to the product label. Be sure to obtain current information about usage regulations and examine a current product label before applying any chemical. For assistance, contact your local N.C. Cooperative Extension county center.

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