Yes they can be frozen but there is a little process................get a pot of water to a rolling boil...........in the meantime wash & peel the turnips....cut them into 1/2 cubes...as soon as you have a full boil add the vegetable......boil 2 minutes.....and then take out and put the veggies in a ice water bath.....add extra ice to cook it down fast....this will blanche and keep it safe for freezing. when the veggies are totally cold........I shakes off as much water as possible.....and paper towel dry them and spread them out on a tray and freeze.........when they are frozen......just put them into heavy duty freezer bags and get out as much air as possible> They will hold for about 18 months.