I've still got some in the ground from April sowing last year. I don't need that patch yet so I'm leaving them, I did dig up quite a few about a month ago, washed them and stored at the bottom of the fridge, they are keeping perfectly like that, so you've a range of options. I don't know why they haven't gone woody yet, they usually have by this time, just shows what an unpredictable thing growing veg can be.