Cauliflower is one of those plants that grows really well in aquaponics. They are sturdy and less prone to pests.
Last year we planted two plants as an experiment and they both turned out good. So this year we planted a few and they all are almost ready to be harvested. In fact, we were not certain when to harvest until we saw one starting to change color today.
I wish if I could plant more now, but unfortunately cauliflower is seasonal and may not survive our summer. I will still see if I can find some seeds to experiment.