The Illinois Everbearing Mulberry tree is perhaps the most notorious cultivar of mulberry trees known today in USA. This particular specimen is cold hardy down to approximately negative 25 degrees fahrenheit and produces multiple crops of mulberries in a year. Even though the Illinois Everbearing Mulberry tree is a fan favorite to northerners, residents of the south have quickly realized how drought tolerant they can be and adaptable to warmer regions such as Lousiana, Texas, north Florida and many others! If you enjoy harvesting a lot of mulberries, this is the one to plant since it is among the heaviest bearing mulberry around! (USDA Zones 4-10)