Purslane (Portulaca oleracea) has been my garden staple this year. Last year, my little garden was filled with a lush carpet of lambsquarter. Because I ate it (pinched it back) every few days, it grew thicker every week, and didn't go to seed until well into September. I'd hoped for more lambsquarter this year, but the rabbits nibbled back all the early starts. That left the door open for purslane to overtake my garden. Who am I to complain? I invite any edible plant that can thrive there without water to set up shop.