If letting the soil dry out does not get rid of the gnats, you may need to completely remove the plant from its current pot and into a fresh, clean pot with new soil. 1  Carefully remove the plant from its current pot. 2  Use your fingers or a soft brush to remove as much of the soil as possible.
When you get it home, unwrap it immediately and transfer to a loosely sealed plastic bag, with a paper towel tucked in to absorb any excess moisture. Whole heads of cauliflower can be kept in a loosely sealed plastic bag in the refrigerator for 4 to 7 days. Precut florets should be stored for no more than 4 days. How to prepare cauliflower Grant Butler demonstrates how to cut a head of cauliflower to get it ready for cooking.
Place cauliflower florets in a microwave safe dish large enough so the florets are in one heaping layer. If cooking the head whole, wrap it in plastic wrap and place in a microwave safe dish. Sprinkle three tablespoons of water over the florets, cover and microwave on high for 4 to 5 minutes. Let stand for 1 or 2 minutes. When cooking whole head of cauliflower, microwave on high for 3 to 4 minutes, turn head over and continue to cook for 3 to 4 more minutes. Let stand for 2 to 3 minutes.