Root system deep and spreading. Germplasm Reported from the Australian Center of Diversity, redgum eucalyptus, or cvs thereof, is reported to tolerate alkali, drought, fire, light frost, heat, high pH, poor soil, salt, savanna, and waterlogging. It is rather intolerant of weeds. The NAS catalogs four outstanding provenances, 'Katherine' and 'Petford' for tropical climates, 'Lake Albacutya' for Mediterranean climates, and 'Broken Hill' for arid climates. Plantations occur in Argentina, Arizona, California, Egypt, Kenya, Morocco, Nigeria, Pakistan, Senegal, Sierra Leone, Spain, Sri Lanka, Sudan, Tanzania, Upper Volta, Uruguay, and Zimbabwe.
Ecology Ranges from tropical through subtropical and warm temperate, and from arid to semiarid.
It is reported in areas with only 2 dm rainfall, but the lower limit for commercial plantations is 4 dm. Some provenances tolerate many different soil conditions, high calcium, high salt, periodic waterlogging. Occasionally pure stands may develop naturally along flood plains and stream banks. Extensive weeding may be mandatory. As firewood, the timber from Eucalyptus camaldulensis has few equals.