Local Organic Farmer's market (near Glendale/Burbank)
Likewise, there is a small one on Saturday in Burbank, maybe on Palm west of San Fernando Road.
A larger one, though not as convenient, would be the one in Studio City on Sunday mornings from 8am to 1pm.
Very good variety, over half of which is organic.
On Ventura Place, just east of Laurel Canyon, in front of Big 5 and the future home of Joan's on Third.