Why do my tulips have all leaves and no bloom stalk?

What is your location? When were the bulbs planted? Did you have a cold front?

They may be planted too deep, especially if they've been in one place for a long time. Dirt can slowly accumulate on top of your tulip bed.

It could possible be, you have the bulbs that only blossom once or twice. I have had those.

I've never had that problem but will ask you one question which is: when the tulip dies down (bloom or no bloom) do you let the foliage/leaves of the tulip die down naturally OR do you get tired of the rather messy look of the wilted leaves and cut them all back? I realize when tulips (and other bulbs) are done blooming, they look messy but you must let the plant die right down naturally before snipping off any old yellow leaves, etc. The reason is those dying-down leaves are putting energy BACK into the bulb for the following year. I've never had bulbs fail to produce flowers so I have no other suggestion but wish you luck in the fuure.

Could be they've been in the ground too long and need to be divided and soil amended.

If you plant a bulb too deep they will not blossom...

Tulips usually only bloom a max of 3 years. Other advice, such as never cutting off leaves until they dry up and turn completely brown also is true.

Did you tulips get any plant food/nitrogen? Some fertilizers promote green growth, others promote flowering. Try organic options and read up on fertilizers.

My plant grew to large and I had to split the plant, now I have blossoms in both plants.

Other factors (in addition to the ones others have suggested) resulting in no blooms after the first year of planting are lack of a long cool, moist after blooming for next years bloom to form, or a virus or to wet of location resulting in the larger bulbs rotting leaving only the small, immature ones.

They will be in bloom yet, it is still early, for Memorial Day hasn't even come yet. This has been a very different winter, so be patient, ok? Try to keep them in the sun, and out of the chill of the air, ok? In the evening, bring it to a area of the porch, where the brisk air will not hit it. Memorial Day is coming, and so is warmer weather, ok? Enjoy!!!