The bulbs were planted mid November and they started blooming the first week of April. This assortment is really outstanding. Colors are brilliant and will be something to look forward to next spring as well. The tulips themselves are so unique and are nothing I have ever seen or planted before. If you are someone who enjoys waiting for the first sign of spring after a long winter, you need to plant these tulips. Also, to mention, the customer service in the purchase, questions and delivering of the bulbs, outstanding! Excellent customer service.