Crossword Genius

Turn to vaulting now summer's here (6,4)

Ross

I believe the answer is:

spring over

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

'vaulting now summer's here' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'turn' is the wordplay.
I cannot quite understand how this works, but
'turn' could be 'go' (a person's move in a board game) and 'go' is found within the answer.
This explanation may well be incorrect...

'to' acts as a link.

Can you help me to learn more?

I've seen this clue in The Globe and Mail.
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