This is the second year I tried and failed at tulips. Last November, I put these tulip bulbs in the refrigerator for their 6 weeks of pretend winter. I planted them in January. I followed all the instructions and only 3 came up and one of those was a dud. I think I might give up on trying to prepare my own tulip bulbs and just buy the bulb packs from Home Depot next year. They were perfect, but not as much fun and twice as much money money.