Gum tree Eucalyptus gunnii grey-greenFast growing and keeps its leaves. De gum tree (Eucalyptus gunni) is a beautiful plant for indoors and outdoors. The eucalyptus has aromatic leaves whose oils are often used to treat respiratory problems. The scent also repels mosquitoesmultifunctional! This evergreen plant is very attractive with its rounded leaves that become sickle shaped when the plant matures. Between October and December, the eucalyptus blooms with subtle, white flowers. Plant