How do Iprevent my tomato plants from getting the blight every year.

Do you always pick up and take any leaves and branches that fall off? You need to remove the plants and any tomatoes in the fall so they do not lay on the ground over winter and get tilled in to the soil. What do you mean by blight. There are many things that can cause problems with your tomatoes. I literally had a garden that was so small that if I moved the tomatoes over half of the garden would lose the sun because they would shade everything. I had them in the same place every year for thirteen years and only had problems with my tomato plants at the end of the season, which I figured was from the fact that the tomato plants were old and ready to die from the oldest (the bottom) going up to the top, but never affected the tomatoes. I picked up every leaf, branch, roots, little tomatoes, etc. in the fall. If there is anything left when you till in the spring it will get spread into the garden. I found some articles on tomato blight, you will find a bunch on this page and you can pick and chose the ones you want to read. Just go down to where the articles from gardeningknowhow start. I hope you can find the information you need!

https://www.gardeningknowhow.com/search/?q=tomato%20blight

I tried to copy and paste a short list of treatment, but I couldn’t. Basically, keep the tomatoes from touching wet ground. Cut off leaves that might touch wet ground. Apply fungicide at the first sign of blight—white spots, streaks, or grayish areas. The tomatoes that are green or ripe should be pulled as soon as you see blight. And the tomatoes are safe to eat, once washed. Just cut out the white or gray parts. Best wishes ☺️

Regular watering........

http://www.veggiegardener.com/tips-for-preventing-and-treating-tomato-blights/