A fast and easy way to help your tomato plants fight off diseases and strengthen the foliage for nearly free. A cheap aspirin will help to mimic a tomato hormone that will boost your tomatoes defenses against disease.
By doing this you are basically tricking your tomatoes into disease response mode and it will help toughen the plant before leaf spot, blights and other diseases take hold of your tomato.
A study conducted by the US Department of Agriculture found that spraying aspirin can help to reduce blight by as much as 47%. This is extremely important after a wet summer rain because the wind carries spores that may sprout almost immediately and destroy all your vegetables.
You should be adding about 325mg of crushed up aspirin to 1 gallon of water and then spraying it on your tomato plants 2 – 3 times every month.