There are more than 700 dissimilar type of eucalypt , most of which are native to Australia , with a few species occurring in New Zealand and scattered in the south east Asian Islands just northwards of Australia . Eucalyptus are often called gum trees because they secrete sap prolifically from wounds on the body and branches . Most eucalyptus tree have heavy , profoundly - infiltrate root structures to grapple with the long ironic season in many area of Australia .

Lemon-Scented Eucalyptus

The lemon - scented eucalyptus ( Corymbia citriodora ) is native to key and northern Queensland , Australia along the seacoast . This eucalyptus tree grow 65 to 100 feet tall with a canopy spread of 30 to 80 foot . It has a tall , slender bole and the first branch is often halfway up the tree . The leave-taking are evergreen , but the barque is deciduous , peel off off to reveal placid whitened pinko or pale blue bark underneath that by and by turns gray as it mature . The pale green leaves are 5 to 8 inches long and about 1/2 to 3/4 inch wide . When crush , they give off a lemony odour and moderate citronella , which is a born worm repellent . gamboge - scented eucalyptus require full sun and are susceptible to frost damage . They like a well - drain dirt , but are not too picky about the precise dirt type . They are drouth - resistant , but ask at least 20 column inch of rainfall a yr to survive .

Tasmanian Blue Gum

The Tasmanian gamy gum ( Eucalyptus globulus ) is the most wide - grown eucalypt mintage in the reality . The oil from this tree diagram is frequently used for cough drop curtain and other medicines . The wood from this fast - grow tree is used for carpentry and as fuel . Tasmanian blue gum uprise 130 to 230 feet magniloquent , although specimen over 500 groundwork magniloquent have been report . The farewell are 4 to 10 inches long and 1 to 2 inches blanket . The barque is gray , green or slightly drab . It peels away in foresighted strip revealing light yellow new barque beneath . Tasmanian blue gum requires warm temperatures and may be damage by frost . It is not special about land as long as it drains well .

Peppermint Eucalyptus

peppermint gum eucalypt ( Eucalyptus dives ) is a minuscule - to - metier sized tree that reaches 25 to 80 feet magniloquent with a facing pages of 25 to 50 feet . It is native to south easterly Australia where it is often constitute in rows and used as a windbreak . The leaves are light green , lance - shaped , approximately 3 to 6 inches farseeing and about 1 column inch wide . The sweet-scented leafage smell out similar to peppermint . peppermint candy eucalypt is well adapted to poor , bumpy soil , but it can grow in any type of soil that drains well and does not stay wet . It is tolerant of both frost and drought . The tree diagram can tolerate full sun and partial shade .

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