Cultivation notes. It is advisable to only buy small specimens of up to 1m (3ftÂ¼) tall. Eucalyptus are prone to windrock and, if planted too large or when even slightly rootbound, there is the strong possibility of the top growing more quickly than the roots, resulting in a lack of stability.ultivation notes. It is advisable to only buy small specimens of up to 1m (3ftÂ¼) tall. Eucalyptus are prone to windrock and, if planted too large or when even slightly rootbound, there is the strong possibility of the top growing more quickly than the roots, resulting in a lack of stability.