I am a new member here and I hope that I have picked the right forum for my question. We have a small lemon tree that is growing very slowly. The tree was grown by the previous owner we purchased the house from back in October 2013. For the last couple of years, my wife and I have only been using Miracle Gro garden feed pellets in which we spread them around the base of the tree and then just water normally. The tree did show great signs last year yielding many lemons but it seem as the tree itself isn't growing as fast as we would like to see.
A few questions I am looking for advice on are:
Is there anything else we can do to help add more nutrients to help the tree grow?
Do you recommend that we dig up around the base of the tree and add more garden soil with mixture of fertilizer and compost?
Should we try to dig up the entire tree, widen and deepened the planting hole so we can add more organic garden soil, fertilizer, compost? We were scare of considering this method because we're unsure of how deep the roots has grown and didn't want to risk damaging the lemon tree.
The lemon tree is planted on a raised section of soil but the soil seem very dry and old. I have attached a couple of pictures so give you an idea of the tree and location.