It could be that the bulbs are in too shady a spot, or one that is too soggy. Older bulbs sometimes run down until they don’t flower much any more, but since you just planted yours last fall, that’s likely not the reason. Make sure that the bulbs have enough nutrients, but don’t add too much nitrogen, which can encourage leaf formation over flowering. A damaged bulb, such as caused by a hungry rodent, may also leaf out a bit but not flower. A diseased or weak bulb may perform the same way. If flowers do eventually show, after the display, allow the leaves to fade and brown naturally; if you cut them off while they are still green, then the bulb can not make food for next year, which weakens the bulb and discourages flowering next season.
It could be that the bulbs are in too shady a spot, or one that is too soggy. Older bulbs sometimes run down until they don’t flower much any more, but since you just planted yours last fall, that’s likely not the reason. Make sure that the bulbs have enough nutrients, but don’t add too much nitrogen, which can encourage leaf formation over flowering. A damaged bulb, such as caused by a hungry rodent, may also leaf out a bit but not flower. A diseased or weak bulb may perform the same way. If flowers do eventually show, after the display, allow the leaves to fade and brown naturally; if you cut them off while they are still green, then the bulb can not make food for next year, which weakens the bulb and discourages flowering next season.