1. Can this be applied immediately after a granule insecticide (like Sevin) is applied and watered? 2. What happens if temp below freezing after appl?

Thank you for your inquiry. Preen Lawn Weed Control is to be applied when broadleaf weeds are up and actively growing to a damp lawn, followed by an irrigation, 24-48 hours after use. This product can be used in conjunction with a granular insecticide. Freezing temperatures should have no effect on this product. Thank you.