Bummer. We decided to remove the fugly double tiered flowerbed left behind by our prev owners and discovered that they used rocks as filler. So I made a sifting screen out of small chicken wire and we've been hand shoveling and sifting the rocks out.

It's taking ages, but we'll have a fairly rock free area when we're done.

Bonus: the rocks can go into our driveway. Cleaning up other ppl's bad choices is so much fun!