Eucalyptus radiata (Australia) One of about 300 varieties of eucalyptus. Its penetrating and refreshing smell has been used by many to ease nasal congestion. Try it as a (frequent) steam inhalation, and is excellent mixed with lavender. It can also be mixed with peppermint, pine, thyme or ti-tree oil for this purpose. Leaves/branches, steam distilled, 12ml dropper bottle