Cauliflower is a cold-season crop, and apparently has a reputation for being hard to grow. It prefers a soil pH of 6.0 - 7.0. (I have not yet actually tested my soil; usually I will just add some coffee grounds if I want it to be more acidic.)
Anyways... I've never attempted to grow anything during the cold months (never really thought about it!)... but here goes! :)