Compound or element for Mediterranean grower (5,4)

I believe the answer is:

lemon tree

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'mediterranean grower' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.

'compound or element' is the wordplay.
'compound' is an anagram indicator.
'or'+'element'='orelement'
'orelement' is an anagram of 'LEMON TREE'.

'for' is the link.

Can you help me to learn more?

(Another definition for lemon tree that I've seen is " Variety of citrus".)

I've seen this clue in The Times.

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