[quote="Next year will be the "Year of the Green Bean". Does anyone know how big sweet potato plants should be to able to dig up the taters? We have 8-9 plants, but they haven't gotten very big. I'll wait a while longer, but I'm curious. I dug the red potatoes too soon a couple years ago.[/quote] This year is MY "Year of the Green Bean"!! Best year I have had in 5. I was helping my buddy in Central Pa (Tyrone) dig red potatoes in early November. I believe his were ready in late September, early October; Sweet Potatoes are probably going to be a little later, as they like long, Southern climates. Don't know if they will stand frost, though. I would wait until the last possible moment.