Potting on question
I've read in some articles and seen on tv it be said that when potting on plants you should only pot on to a slightly bigger pot and not jump up to a much bigger pot size. For example in this article (in the first paragraph).. http://www.gardenersworld.com/how-to/grow-plants/how-to-pot-up-plants/
I've never heard an explanation for this though. Why not just pot up a plant into a much bigger pot and then not have to do it again for quite some time? I appreciate that repotting a pot plant can give it a fresh lease of life but I don't see any point in not just going to a much bigger pot as well.