They are a fall garden planting here. But you must realize we hardly ever freeze till jan or feb and then it causes a major problem couse most folks don't even insulate their pipes and most are above ground. We get a really bad week long freeze about once every 15 to 25 years.
Sprouts are like cabbage, they last well. Listen you can try Sam's, They have bags of 'em year round. Thats it, get a bag of sprouts, a bag of honey crisp apples, oh, and a bag of wooden skewers. Then just experiment, tell your bride its for her that you keep smoking. Sounds like a win/win to me.
Try balsamic, maple syrup, bacon, caraway seeds.... thats four smokes without even getting fancy.