This is such a GREAT pumpkin patch! We were going elsewhere, but that patch was closed because it was "too wet." So we followed the signs we'd seen along the way for Peter's Pumpkin Patch and, WOW, JACKPOT! It's located at the Spring Hill Dairy, which is a huge bonus, as they make fantastic dairy products and, of course, have their cheese, butter and ice cream for sale. They've got thousands of pumpkins, both picked and still on the vines in the patches. They've got a patch where you can dig up potatoes (yum), hay rides, carriage rides, old tractors, an opportunity to milk a cow and, on weekends, live music. This place is fantastic! Check it out on Spring Hill Road in Petaluma.
If you've ever gone to a Farmer's Market in Marin or Sonoma (or elsewhere in the Bay Area, I'd think), you'll have had a chance to taste Spring Hill Cheese's fantastic cheeses and small-batch butter. Oh my goodness... if you haven't, you'd best do it. Yum!