"I've been blown away that they all wanted to do it. Everybody got really creative, these are very busy people that gave up their time to do quite a random challenge."
She was inspired by the Chelsea Flower Show which lifted its ban on garden gnomes this year and a similar initiative was held where celebrities decorated gnomes to raise money for charity.
The kitchen centre is being used by a school holiday programme, where their tomatoes, lettuce, beetroot and strawberries are put to use.
Community cooking lessons also take place in the kitchen.
Ms Smith has been involved with the garden for five years and says it's an important place for the community to come together.
"You come here for two hours and get totally absorbed in the garden, it's very therapeutic."
To donate to Lorde's gnome visit the auction on Trade Me here.