Traditionally, it's recommended that you do this in the fall. However, as long as the tulip greenery has wilted and faded, it's probably OK to do it now, if the mood has struck you. I have done it in the summer successfully before!
When to dig and separate tulip bulbs?
I have always separated the bulbs in the early fall. September October
Reply:you plant usually in the fall but you can plant them in the spring. its best to do it in the fall