Garden shrubs – or try elms for a change (7)

I believe the answer is:

myrtles

I'm a little stuck... Click here to teach me more about this clue!

'garden shrubs' is the definition.
'myrtles' can be an answer for 'shrubs' (myrtle is a kind of shrub). I am not sure about the 'garden' bit.

'try elms for a change' is the wordplay.
'for a change' indicates an anagram.
'try'+'elms'='tryelms'
'tryelms' anagrammed gives 'MYRTLES'.

'or' acts as a link.

Can you help me to learn more?

(Another definition for myrtles that I've seen is " Sly term for the evergreen shrubs?".)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.