Slate provides a forum for conventional ag to comment on the White House garden: the spokesmen make the usual points. Organic is a niche, conventional costs less and can be less hard on the environment, locavore doesn't satisfy tastes all year round, etc. Bottom line--the big boys aren't worried yet.
Meanwhile Obamafoodorama highlights a video of Ryan Howard (Phillies) touring the garden with Sam Kass. There's a brief picture of the garden. Nice lettuce, but I heard somewhere a claim they've harvested 80 pounds from it so far; based on the video I think not. Lettuce is bulky but light. I note the whitehouse.gov site doesn't have much on the garden--just the Howard visit since April was all I saw.