My mother in law always did this, I though it was the chemicals in the peel that made it work so well. Just flatten a banana peel and bury it under one inch of soil at the base of a rosebush. The peel’s potassium feeds the plant and helps it resist disease...works for tomato plants too.
Why You Need Lemon Balm In Your Garden; Uses for lemon balm in your home, garden, beauty routine, cooking as well as lemon balm recipes, and Why You Need Lemon Balm In Your Garden. http://www.annsentitledlife.com/how-does-your-garden-grow/why-you-need-lemon-balm-in-your-garden/
Snipping off the “suckers” from a tomato bush will help the plant to focus its power on the rising fruits instead of the leafs, Growing better, healthier fruit. Clipping any branches off at the bottom of the tomato plant that is reaching the ground helps to ward off insects and mostly disease, such as blights and wilts.