If you have an avocado tree growing in your backyard, you need to be vigilant about a disease that has made a comeback and can destroy your fruit. It's called Sunblotch Viroid, a microscopic invader ...

If you love avocados, cherish them while you can. A microscopic plant invader is sneaking into Florida's avocado trees and could devastate the state's crop. The culprit is called the sunblotch viroid, ...