Knowing when to pick apples will vary slightly according to the variety you have chosen but a general indication is a blush of colour and that unmistakable fragrance of ripeness. If you would like a further indicator, you can cut a sample apple and check that the seeds inside are a lovely dark brown-black. This will tell you the apples are ready to come off the tree. If the seeds are still pale in colour then leave the apples for a few more weeks before checking again- MB.