"I've planted radish, beetroot, rocket, carrots and silverbeet and am looking forward to harvesting them. I'm not the average sort of kid who is fussy about eating veges," he said.
Declan was also working with his parents on a restoration project on family land, clearing gorse and planting native trees.
He also had plans to attack the rest of the garden at home and expand his vegetable patch.
The regional win netted him a Yates hamper with $300 worth of products.
He will go up against seven other regional winners for the grand prize of a trip to Australia, becoming a Yates Ambassador for a year and spending time in his garden with a Yates horticulturist.
The winner will be decided by public vote.
Voting closes October 5 and the winner will be announced during National Gardening Week, beginning October 15.