I have some Tomato plants in ground and some in pots. The ones in ground I have never fertilized except for adding compost to the hole that i planted them in. They are doing fine but I think they can do better. I have quite a few in pots too but they are in miracle grow moisture control for pots planting mix and they are doing very well. Is there anything I can or should add to any of these for better growth or just because they should have a certain nutrient? Thank you