Agricultural soils can contain thousands of weed seeds and a dozen or more vegetative weed propagules per square foot. Under these conditions, seeds germinate in soil protected from direct light and in an airy substrate. All you have to do now is wait.  Source: <a href=https://www.adirondackchamber.org/list/member/liliane-lind-13356>https://www.adirondackchamber.org/list/member/liliane-lind-13356</a>