Sterilize soil by placing black plastic over the area, holding the plastic down with heavy rocks and leaving the area covered for 10 to 15 days. Block out the sun and cut out the air from soil in order to sterilize it and get rid of old vegetation using instructions from a professional landscaper in this free video on gardening and lawn care.
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I'm Bill Elzey with Showplace Lawns. Let's talk a little bit about sterilizing the soil. We want to sterilize the soil to mainly make it weed free and get rid of all the unwanted vegetation. To do that we're going to use black plastic, some nice sturdy rocks to hold it down, we're going to leave it for about ten days to about two weeks or longer depending on the time of year in which you do it. Put this plastic out. Put it down where it's real tight. That's keeping the air away from it. It's keeping the light out of it. And with the heat of the sun, it's going to heat this up and that's where your sterilization will come from. Again, depending on the time of year you're doing it, you may need to let it sit longer. If it's in the summer when that sun's nice and hot, ten days will work just fine for you. And that's how you sterilize the lawn.