Which fruit and veg should I juice?

Never mix the juice of melons with the juice of other fruit and veg. A cucumber is in the melon family.

As a very vague rule do not mix fruit and vegetable juices. Ones that do mix well though are, celery, strawberry, apple, carrot and spinich, blueberry, you can mix any quantities of these juices with another of these juices. Excercise caution when trying to mix outside of this range.

You can juice most fresh fruit or veg but the ones that are most suited to having regularly over a juice fast are as follows;

beetroot
carrot
apple
any berries
celery
spinach
broccoli