Cauliflower is not the easiest crop
but if you give it what it needs-moisture, well-limed soil,
and lots of compost-it can be grown well in most places.
The key is to keep it growing, so don't let it sit in the flat too long, or go without good soil and water.
During hot weather, a taller crop giving afternoon shade is a good idea. Or use shadecloth.
Coastal weather is ideal, and makes cauliflower relatively easy to grow.
See also Romanesco Broccoli. Brasica oleracea C/Matures 8-12/Harvesr 1-2/Yield 44-291/Spacing 15"