Lay down a thick layer of CARDBOARD in your raised garden beds to kill the grass. It is perfectly safe to use and will fully decompose, but not before killing any grass below it. They’ll also provide compost and food for worms. WORKS BEAUTIFULLY.
Raised beds are a gardener's dream come true: From weeding to harvesting, in cool climates and waterlogged soils, raised beds remedy a host of problems. Growing in raised beds means you don't have to bend over as much, saving on your back. The soil warms faster in spring and drains faster in wet weather. What's not to love? So here's how to make your own raised bed.