Fusarium wilt, also called dry rot, is more common in warm climates, where it can destroy entire tomato crops. At first, it may seem like the plant is simply very thirsty; its leaves and stems are drooping. Some leaves or entire stems wilt.
The disease progresses from the bottom of the plant to the top. Eventually, the entire plant collapses. The disease’s spores can live for years in the soil and are spread in a variety of ways (via water, equipment, people and even animals).
The best way to prevent the disease is to treat the soil at the end of the season and disinfect all accessories with a 10% bleach solution, including tomato cages and stakes. It's also a good idea to choose varieties that are more resistant to the disease.
