I have had about 10 tulips for 5 to 6 years. Never took them out of the ground. They have always flowered except this year. Just got leaves, and no blooms. Are the bulbs just old? Can they be rejuvenated? Thanks in advance.
Certified GKH Gardening Expert
Tulips may stop blooming if left year after year. It could also be a lack of phosphorus. I would recommend adding bone meal to get them going again. This article will help with blooming: https://www.gardeningknowhow.com/ornamental/bulbs/tulips/tulips-bloom-every-year.htm