No Mow May … It's finally May, and all those April showers are probably beginning to show their results in your yard -- starting with the lawn, which is becoming greener and more robust. But before you start up the mower and take some laps around the yard, you should know about a new movement that's urging you not to do that ... at least not in May. It's called "No Mow May," and it's all about protecting and supporting the bee population. Here's the reasoning behind it: Leaving the lawn uncut will allow for more dandelions to grow, which will boost pollination and therefore increase the number of bees. But if helping the bees isn't enough to convince you, experts say leaving your lawn alone this month will also help the grass become resilient to drought and require less watering.