I didn't see any threads on the Baltimore Farmer's Market under JFX so I thought I'd start one up. If there is one, and I missed it flipping through the threads then I apologize.
The market is on Sundays, officially from 8-noon (although once vendors are set up they'll start selling). It's right beneath the end portion of I-83 in a parking lot. Fairly hard to miss, but if you go on Gay from Fayette then you'll pretty much hit it (watch out for pedestrians!).
I love the market, usually there every other sunday or more (will definitely be there this sunday). Admittedly not the cheapest of markets around: their prices are decent and their quality of products is usually top notch. Lots of vegetables and herbs to be found, and as the summer rolls on there will be plenty of fresh fruit coming out. Lots of flowers too if you're looking for that.
There are plenty of vendors selling food as well. I love the mushroom stand personally (really fantastic mushroom fritters), but there is a whole slew of others. Popular ones include: Pit Beef guys, falafel stand, crepe stand, donut guys, and the coffee stand. Several (3-4 if I recall) bakeries as well for your breads/pastries needs. So there's really nothing that's not to like.
What do you guys gravitate towards under the JFX? See you guys there.