Julie from Merrill writes
Pasture Pro Herbicide states on the product label: May be applied to newly seeded perennial grasses or to the newly seeded grasses grown with a companion/cover crop such as small grains. Postemergent applications of this product are recommended only after the 5 to 6 leaf stage of the grass seedlings. Or, do not apply this product prior to the beginning of the tillering of the perennial grass seedlings. Perennial grasses have shown tolerance to this product when the grass seedlings have tillered and have developed an adequate secondary roo system.
Answer last updated on: 06/05/2018