I force them 3 different ways, all successful -
a) cold period in refrig, then either potted up or placed in hyacinth glass w/ water
b) hyacinth glass w/ water for cold period and bloom
c) in soil for cold period and bloom
then to garden, sometimes the water only ones take 2 years to bloom outside.
Yours look fine; when those in pots push up, I usually just push them back down (gently, but forceful enough to keep em at desired depth). Same w/ tulips a/o daffodils (these are usually all forced in soil, though some daffodils have the ability to be forced more swiftly using just water).
