No Flowers on Hyacinths
My hyacinths produce lots of green leaves each spring but no flowers.
Hyacinths and many of the newer hybrid tulips tend to put on a fabulous show for a few years and then produce leaves but no flowers. Always leave the foliage on these and other blooming bulbs for at least 6 to 8 weeks after flowering (or when they should have bloomed). If you have done this you may want to try digging and dividing the bulbs. This often invigorates the plants and encourages bloom. For a more reliable flower display, replace hyacinths every few years.