The secret to the success of Deirdre and Trevor Kitto's garden is no secret at all.
Regular watering has kept their plants green throughout the summer.
"You do pay a lot for water," Mrs Kitto said.
"I try not to cut things back too much when it's really hot – we're planning a big cut-back in March.
"If you've got tall shrubs and trees, that helps; and compost and hay ... if you don't do that, you can't keep the heat off the ground.
"Everything we cut off goes through a mulcher."
Watering at night had helped their plants stay healthy as well, she said.
The Murray Bridge couple showed the fruits of 16 years of labour to dozens of visitors from the Hills Green Thumb Garden Club on Friday.
Each segment of their property has its own name: the Peterson Garden for two deceased friends, the Friendship Garden for plants gifted to them, Thelma's Rose Garden for a friend who gave them money for a wedding present.
The garden takes up about a quarter of their 5.7-acre property on the city's western outskirts.