By DCist Contributor Vanessa Schipani So it’s February and the snowpocalyses of weeks past are still staring us in the face. It is not spring yet, as much as we’d like it to be. But that doesn’t mean we can’t plan for it and start thinking about those delicious vegetables we’d like to grow right in our own backyards — those of us who have backyards, anyway. The Rooting DC 2010 Gardening Forum held yesterday…