I have about five apple trees that are about 6 or 7 years old and have never been pruned! Is it too late to do it now, as they are not taking the shape of trees at all. They were on the property when we bought it.
Pruning Apple Trees
Certified GKH Gardening Expert
This article will also help with apple pruning: https://www.gardeningknowhow.com/edible/fruits/apples/pruning-apple-trees.htm
This article should answer questions about pruning apple trees: http://www.garden.org/ediblelandscaping/?page=pruning-fruit