More Bulbs Than I Can Plant

Question

I live with my father in Wisconsin, and this year he purchased way more bulbs than he could plant. I fear that it may be too late in the season to plant these bulbs now. There is a vast variety that are not planted. They are currently in the boxes they arrived in. Do you think they still might have a chance if I can get them quickly in the ground? Would it be better if I store them until fall, and if so how?

Answer 1

These articles should help:
https://www.gardeningknowhow.com/ornamental/bulbs/bgen/is-it-too-late-to-plant-bulbs-when-to-plant-bulbs.htm
https://www.gardeningknowhow.com/ornamental/bulbs/bgen/how-to-store-bulbs-that-have-sprouted.htm