We like this one. It's not in Forsyth Co, but it's pretty close and the proceeds go to the WS Rescue Mission. http://www.themaize.com/sites.php?ID=&username=ncwinstonsalem
It depends on what you are looking for, several churches in town sell pumpkins as a fund raiser. We also like the pumpkin patch at Maple Springs UMC on Reynolda Rd in Winston. It's a youth fundraiser. They have a ton of different sized pumpkins out on the front lawn. Think it starts today. It's always been fun for my older DS to just run around and look at all the different pumpkins there, but there are no hayrides, corn maze, etc.
There is a church one in Kernersville.
Other than small ones at churches, I don't think there really are any big pumpkin patches in WS.
We've taken Eli to the maize adventure in Kersey Valley. It's not too far, and pretty cool. www.maizeadventure.com
mrsmikey- that is the one I found last night- looks fun. We will probably go there.