Mulberry Trees in general are drought tolerant and forgiving of poor soils and tough urban conditions. Not recommended to plant over driveways and walk ways due to fruit drop staining surfaces. Mulberry trees can become quite large with time, upwards of 30′ in height and spread. Cold hardy to U.S.D.A. Zone 9 but as they mature they are able to withstand temperatures down to zone 7. Frost sensitive when very young.