I agree with both Paul, Lucy, and Tom. I'm sure they will survive ,un planted, if kept cool and dry, with some good air flow around them to prevent mold....maybe hang them in an 'onion" bag ?! But, if I had any room to do so, I would either "Pot" them, and "sink " the pots, or just pant them directly in the soil....maybe just in a row, ...even 'crowded" closely, and then re plant in the spring when your bed is ready. They are very "forgiving" plants !