Use prodiamine (Barricade) for long-lasting pre-emergent control

What to Do

Apply prodiamine (sold as Barricade) at the label rate in mid-spring. It provides the longest residual control of any pre-emergent herbicide — up to 6 months at full rate.

Why It Works

Prodiamine binds tightly to soil particles and resists leaching, creating a durable barrier against crabgrass, goosegrass, and Poa annua. Its long residual means a single application can last the entire season in many climates.

Tips

• Available as granular (easier for homeowners) or liquid concentrate (more precise).
• Can be split into two half-rate applications 8-10 weeks apart for even longer coverage.
• Do not aerate or dethatch after applying — this breaks the chemical barrier.