It’s a eucalyptus. We use “a” or “an” based on the sound, not the spelling, made by the initial letter of the word that follows.
It’s a eucalyptus. We use a or an based on the sound, not the spelling, made by the initial letter of the word that follows.
Do you know how to grow a eucalyptus tree?
The term “eucalyptus” begins with a vowel that makes a consonant sound (a “you” sound); thus, we use the indefinite article "a".
Examine the leaves of the tree that you suspect is a eucalyptus tree.
Examine the leaves of the tree that you suspect is an eucalyptus tree.
More examples:
Have you ever seen a eucalyptus tree?
Anyone who has walked in a eucalyptus forest knows the intense, minty smell that the trees produce.
This is a partial list of words that also begin with “eu” and take the article "a".