"The structure is steel, so I welded the steel armature, and then I worked over that with fibreglass, and then I painted it."
Patterson trained as a jeweller and started sculpting after she inherited her father's welding machinery eight years ago.
Chairwoman of the Whangārei Quarry Gardens trust Jennie Kerr said the event had been cancelled twice because of Covid, so it was great to finally get the show back on the road.
"We just want to get the community into the gardens."
At the last event in 2019, 10,000 people went through the gardens during the 10 days and over 60 per cent of the artworks sold.
"It's really just volunteers that do it all," Kerr said.
Garden manager Guy Hessell takes care of the garden and overseas the volunteers, but he reiterates it's a community-driven project.
"Everyone has equal input, I like to call it flat management."
All the proceeds from the event go towards the running and development of the Quarry Gardens.
"Damages from the flood in 2020 cost hundreds of thousands of dollars to repair and events like this help pay," said Hessell.
The art show comes as the Quarry Gardens is also gaining recognition for its fragrant camellia collection, which started 20 years ago.
"We have now 200 scented camellias registered in the gardens which allows us to apply to have the collection recognised as an International Collection," Hessell said.
Sculpture Northland will run from May 20 - 29 and will be open 9 am - 4 pm daily at Whangārei Quarry Garden.