Clothing becomes old and is turned to loads of worthless stuff (8)

I believe the answer is:

garbages

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'is turned to loads of worthless stuff' is the definition.
I can't tell whether this definition defines the answer.

'clothing becomes old' is the wordplay.
'clothing' becomes 'garb' (garb is a kind of clothing).
'becomes old' becomes 'ages' (I can't explain this - if you can you should give a lot more credence to this answer).
'garb'+'ages'='GARBAGES'

'and' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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