Old MacDonald had a farm...and he brought his wares to South End. You know you were all just singing the tune in your head (just as I was when typing it)!
On a more serious note, this Farmer's Market is the cat's meow. They have everything from grass fed meat to seafood to veggies to soap to candles to jewelry to honey (be sure to try the infused pumpkin spice or cinnamon honey). The vendors are all local and very helpful when you have questions on how to prepare their wares. The entire atmosphere is so friendly and upbeat that you just want to be eating and living a healthier lifestyle.
New hours are Tuesday from 3-7pm, Wednesday from 11am-7pm and Saturday from 9am-2pm. Now for those of us who need to shop at least twice a week because we're using all fresh ingredients, being open after work is much appreciated! There is quite a bit of parking so that's never an issue. You'll also want to bring some cash as not all vendors accept cards.
Be sure to check out Atherton; you won't be disappointed!