Around July 4th it’s time for a second (and last) application of crabgrass preventative. The herbicide which you applied in late winter is likely worn off. The basic herbicide preventative product tradenames (and active ingredients) are: Barricade® (prodiamine), Dimension® (dithiopyr), Echelon® (prodiamine + sulfentrazone), Pendulum® (pendimethalin), and Ronstar® (oxadiazon). Irrigate (1/2 inch water or 1  1/2 hours watering with an […]