looking for farm to volunteer on for a week Nov. 28-Dec. 6 2015

I am looking for a farm to volunteer on from Nov. 28-Dec. 6. 2015. here in northern california near the bay area or southern California (I can drive down there). I know its short notice but my friends farm didn't have much for me to do. So I am reaching out. volunteer in exchange for room and board. I have worked at blueberry and veggie and medicinal plant farms. For the past two years I've worked at a plant nursery in Hamilton, Montana. I'm just visiting California right now. let me know!

Thanks