Jeff from Waxhaw, Nc writes
Hi-Yield Crabgrass Control should be applied 1 to 2 weeks before germination of annual grass weeds for best control; this varies by region. Your local cooperative extension office would be able to advise you on the best time. Since this product is a pre-emergent, you have to wait at least 3 to 4 months before re-seeding your lawn after application.
Answer last updated on: 10/10/2017