Headhouse Square Farmer's Market
Anyone notice that quality seemed to be off this past Sunday? I got some amazing peaches the previous week; this week, they all looked like crap. I couldn't find any good regular tomatoes either, all had little to no aroma. Something to do with the weather?
Actually heat is good for some things and bad for others. Peaches are better when it's been hot and dry - it concentrates the flavor and sweetness (heat is one of the reason Napa is good for wine grapes).
Most things that are common to the Mediterranean and are technically fruits, do well with hot weather - peppers, eggplants, zuchinni, tomatoes, melons.
(that article you linked to really only talks about grain production - which I suspect involves different concerns than fruit production. The only mention of non-commodity farming is the guy from Linvilla saying people don't like to pick their own fruit when it's hot out. This, about a good peach crop this year, is more pertinent: http://www.northjersey.com/food_dinin... )
I don't know about Headhouse, but I got terrific tomatoes and peaches at the Elkins Park farmer's market yesterday. On the other hand, the produce at the supermarket was abysmal today and it's usually pretty decent.