I'm actually limiting vegetables a fair bit at the moment because of digestive issues, but it's still easy to reach the goal.
This past week it looked like this:
Herbs - 5 full points
Spices - 5 points made up of various measures.
Nuts and seeds - 5 full points.
Onion, garlic, spring onion - 3 full points
Coffee, tea - 2 full points (I only count each of these once no matter how many types over the week)
Lentils, beans, rice, potatoes, tinned tomatoes - 5 full points
Oats, popcorn - 2 full points
Very limited intake of vegetables/fruits:
Carrots
Parsnips
Swede
Beetroot
Avocado
Blueberries
Strawberries
Kiwi
Watermelon
Lemon
Lime
I do agree with pp, there's no need to do this officially if you eat a very varied vegetable diet. But sometimes people need a guideline to follow, especially if it doesn't come naturally to them to eat this way.
I don't make a big deal of it but once in a while I count as a little exercise to keep track of how I'm doing.