I agree soil is pale and dry. You can't get to great soil in one season, but you really want to work on building your soil. Good soil is the foundation of a good garden. Here's what you hope for your soil to be looking like:
Start a compost pile if you haven't already (we have a whole composting section if you aren't familiar with it). If it were me I would cover all that soil around and between the plants with a good layer of organic mulch -- not wood chips, but straw, shredded paper, grass clippings, pulled weeds, fall leaves, etc in any combination. It will prevent weeds, hold moisture in the soil and then break down to feed the soil.
I don't think you have told us where you are. Depending on your location and climate, it may be quite late in the season. I don't grow cauliflower, but I have a lot of broccoli, which is closely related. My broccoli is almost done. Cauliflower and broccoli are cool weather crops which will bolt if it gets too hot for them.