Store broccoli in a plastic bag in the fridge, if you are going to eat it within a couple of days.
If you need your broccoli to last longer, sprinkle the head of the broccoli with water, wrap it in paper towels and place it in a sealed ziplock bag in the fridge.
To freeze broccoli, separate it into florets and blanch. Free flow freeze the broccoli pieces on a tray and then transfer to an airtight container or bag once frozen.
Tip: Broccoli stalks are edible!