As the soil temperature warms up, weeds will start popping up like crazy–on your lawn, and in your flowerbeds. One day you'll see none. The next day it's an outbreak. If you're looking to suppress some of those irritating weeds and keep them from showing up in your flower/mulch beds, you might consider using a pre-emergent.  Some people choose not to use them, but pre-emergents can significantly decrease the work you have to do in your beds throughout the season. Now is the time to get them down. Hear more about how to use pre-emergents in your mulched beds in this episode of Eco Lawn Science.