Full strength PREVENT® should not be used over the top of new or dormant grass seed. PREVENT® will stop grass seed from germinating just as it does with crabgrass and foxtail seeds. If you are overseeding or dormant seeding follow these tips:

• After dormant seeding over winter, apply GOLF COURSE STARTER® mid to late March for a quick green up on existing grass.
• When overseeding in spring, apply GOLF COURSE STARTER® on the day the seed is planted.
• Apply TUPERSAN® granules, a seed safe pre-emergent, the 2nd week in April. TUPERSAN® will give about 85% control on annual grassy weeds, but only for a short period of about six weeks. 
• After six weeks, when your new seed is two inches tall, apply PREVENT® to extend crabgrass and foxtail control through the summer months.

Just a few bare spots?

• Apply Step 1 PREVENT® over the entire lawn and water in.
• After 3 days, allowing time for the herbicide to activate, use a heavy rake to scratch the surface of each bare spot. Scratching the soil surface will break the vapor barrier created by the herbicide.
• Topdress each barespot with 3/8 to 1/2 inch PRIMERAFC seed dressing, apply your new seed on top.
• Cover new seed with an additional 1/4 inch of PRIMERAFC seed dressing. DO NOT USE TOPSOIL. Topsoil contains weed seeds. Keep damp with frequent light waterings. The seed dressing buffer will allow the grass seed to sprout above the pre-emergent barrier and not be damaged by the PREVENT®.