At least 5 different portions a day is the fruit and vegetable target - approx. 80g is one serving.
Calories in vegetables are generally quite low. Exceptions are potatoes and related root vegetables - 'starchy' foods.
Potatoes don't count towards your 5 A DAY but should form the carbohydrate part of your meal. Vegetables should make up half of your plate. As calories in vegetables are so low, they are dieters friend!
Calories in Other Vegetables