Pre-Emergent – Diminishing Activity?

Q: I put pre-emergent on my common Bermuda lawn a couple of weeks ago. My pine trees drop a ton of pine straw. Would raking interfere with the action of the pre-emergent? Jen Marion, email

A: I don’t think you’d have a problem raking up the pine straw. Several studies have shown that even aerating a lawn does little to diminish pre-emergent activity.

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