Homeplate (active ingredient caprylic acid) is an organic herbicide that has been on the market for 15+ years and is an effective product for weed burndown. At the CAFF Farm, in order to kill the large, mature weeds around our plasticulture beds, we needed to apply Homeplate at 8 gallons per 1,000 sq ft and 10 oz of product per gallon (80 oz of product per 1,000 sq ft). Our weeds were quite mature and above the recommended growth stage on the label. With smaller weeds, the rate and water volume likely can be reduced but we have not yet had an opportunity to dial in that rate.
Organic Herbicides: Using Homeplate to clean up weeds around plastic mulch (Center for Arkansas Farms and Food)
