Concord .. hmm, maybe they grow grapes there, I told my colleague as I noticed the sign post pointing there (Concord grapes, the ones they make jelly with). We were stuck in traffic. We had just exited I-680 and making our way back to the hotel in Walnut Creek. But no, I was wrong. Yes, the Concord grape is a cultivar derived from the grape species Vitis labrusca (also called fox grape). But the major growing areas are the Finger Lakes District of New York, Lake Erie, Lake Ontario, South-western Michigan, and the Yakima Valley in Washington. And the original Concord grape hails from Concord, Massachusetts : developed in 1849 by Ephraim Wales Bull. [Source for all this information : Wikipedia].