Use a split pre-emergent application for season-long control

What to Do

Instead of one full-rate application, split your pre-emergent into two half-rate applications spaced 8-10 weeks apart. Apply the first at the standard soil-temperature trigger and the second in late spring or early summer.

Why It Works

A single application's barrier degrades over time. In regions with long growing seasons or heavy rainfall, the barrier may weaken before late-germinating weeds like goosegrass appear. Splitting the dose extends protection from early spring through mid-summer.

Tips

• This strategy works especially well with prodiamine (Barricade), which has a long enough residual for each half-dose to last 3+ months.
• The total amount of product used is the same — you are not applying more, just spreading it over time.
• Particularly recommended in transition zone and southern lawns with longer weed-germination windows.