The couple fell in love with the location and the garden site and considered the buildings could be used for accommodation.
"Seven years of hard work later, our slice of paradise has become a reality that we enjoy sharing with our guests."
More than half of the gardens featured over the three days are new to the festival with a mix of town and country gardens.
All profits will go to the BayTrust Rescue Helicopter service.
DETAILS
WHAT: The Rotorua Festival of Gardens
WHEN: Today through to Sunday.
WHERE: 40 gardens to visit throughout Rotorua region.
COST: $30 for 3-day pass (or $20 for seniors) including the guide book and maps. Available from Palmer's Garden Centre Rotorua, Cottage Flair Ngongotaha, or phone John Rainbow (07 332 2767).