Don't Double Up Pre-Emergents: One Application Works

Halts and LESCO 0-0-7 both contain pendimethalin. Applying them together is just a double dose—wasteful and unnecessary. A single application at the labeled rate, watered in and timed correctly (when forsythia blooms), gives excellent control.

Only if you have severe weed pressure should you split the application: one in early March, another in May. Otherwise, one proper application is enough.