How Deep Is a Eucalyptus Tree's Root System?

Eucalyptus Roots

• The shallow roots of the highly adaptable Eucalyptus allow it to thrive in many parts of the world. The root system -- which reaches only 12 to 16 inches below ground level -- is the Eucalyptus' method of surviving environments where being the first to access soil moisture is essential for survival. Newly-planted Eucalyptus trees require an area clear of weeds and grass that would compete with the trees or shrubs for moisture. Root establishment is important because Eucalyptus need strong taproots to secure it, as well as strong lateral roots for support.

Damaging Roots

• According to Cal Poly tree records, Eucalyptus trees are rated as having moderate root damage potential, that is their roots can potentially cause moderate damage to structures. Eucalyptus roots grow quickly and can expand rapidly, causing damage to underground pipes, pavement and other structures. For this reason trees such as the Eucalyptus require deep watering to encourage roots to extend downward, instead of remaining close to the soil surface.

Shallow Roots

• Because many Eucalyptus trees have shallow root system that extend less than 3 feet into the ground, they are susceptible to toppling over in strong winds. While roots are shallow, however, they do extend outward up to 100 feet. For these reasons, trees require appropriate spacing from buildings and other structures. The distance of Eucalyptus trees from pavement, buildings and other structures should be at least two-thirds the height of a mature tree. If tree grows 30 feet tall, plant it at least 20 feet away.

Coppicing

• Coppicing is a method of controlling the growth of a tree that works well with many species of the genus Eucalyptus. The tree is kept at a juvenile age by cutting it to ground level after its grown, and this can be done repeatedly. The tree grows new shoots from the roots or stumps left behind, and these can grow into trees or shrubs also. The tree is allowed to grow for a specific amount of time before being cut down. It can be repeatedly used for firewood because coppicing prevents the Eucalyptus from growing old. Young trees are pruned using this method. The coppicing method is not used on large or mature trees because they may not regrow after cutting.