Go green with raised garden bed

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Q: I have a concrete slab (about 2 to 3 inches thick with small rocks embedded on the surface) in front of my house. The area is about 3 feet by 20 feet. I would like to remove it. Can I break up the slab, then cut it into smaller blocks and use them to build a raised garden bed? If so, do you have any suggestions on how to do the job? If not, do you have any other suggestion for reusing this concrete? A: We applaud your effort to go green. You're in for a lot of work, but if you persevere, you will end up with a handsome raised bed for your veggies or flowers. Here are a couple of suggestions: Your first job is to decide on the finished look you want. Do you want to go rustic, like the old rock walls seen in the Gold Country, or do you want to feature the exposed aggregate for a more finished look? Both jobs call for power. For the rustic look, go after the slab with an electric jackhammer. For the more finished look, a water-cooled gasoline-powered concrete saw is the tic...