Frozen fruits and vegetables are just as nutritious, if not more nutritious, than fresh fruits and vegetables. This is because they are seasonally harvested and directly frozen. Fresh fruits and vegetables generally sit on the shelf longer and nutritional losses are the result. So you can use both fresh and frozen. Go for fruits and veggies that are in season, otherwise choose frozen fruit and vegetables.
Frozen fruits and vegetables have other advantages. For example, you need to dispose of less food due to their longer shelf life, so you can stock up on supplies. If you want to know what foods you can freeze to save you time, money and effort, take a look at our article on “Kitchen Hacks”.