It has produced a range of teas made from herbs grown at the Chelmer St site.
Months of picking, drying and brewing have been "a real labour of love", general manager Sophia Leon de la Barra said.
"We've been thinking outside the box. There's no question that our work in the community and schools is valued but the reality is that external funding is getting harder and harder to secure.
"This is our first step into Social Enterprise and we're really excited about it."
Volunteers were integral to the venture.
"Our volunteers are amazing and they've been really involved in the process," volunteer and site co-ordinator Ra McRostie said.
"From picking herbs for processing right through to last week's tea-tasting session for their feedback, you could honestly say that our teas are infused with community along with incredible herbal benefits."
Although Ms McRostie has made herbal teas "for years", the Waitaki Community Gardens Herbal Tea Range had entailed serious research.
"Each brew blends a range of herbs with both traditional and scientific evidence that supports health and wellbeing," she said.
Gardens trustee and volunteer Cara Tipping Smith has been impressed by the "Afternoon Tea".
"I'm a coffee drinker usually, but this one, in particular, really perked me up at last week's tasting. That was a surprise and I loved it."
Volunteers agreed that picking and preparing herbs was one of the summer's best jobs.
"It's been so great being in the Hub and having a yarn together," Ms McRostie said.
"We've all really bonded over our teas.
"We're hoping that feel-good is built in and everyone who tries them gets a little share with every cup."
To celebrate the launch, the gardens is holding a tea party fundraiser from 1pm to 4pm on Sunday. Tea tastings cost $3 to sample the full range, and slices of savoury or sweet pizza from the cob oven also cost $3.
Local bands Reed Street Posse and Oamagonna will play.
The community is invited to take along a picnic, rugs, and seats. Entry is by koha.
