An old water race diverted from the Omarama Stream flows through the Gillies’ property and alpines enjoy the sharp soil on its sunny banks. Photos: Gillian Vine : Treasure trove of alpine gems

This tiny treasure, Trillium azakanum, grows in leaf litter under deciduous trees. : Treasure trove of alpine gems

The Gillies have many examples of Asiatic hybrid gentians throughout their garden. : Treasure trove of alpine gems

The colours of Anemone obtusiloba are complemented by the starry flowers of Phlox bifida. : Treasure trove of alpine gems

A pulsatilla’s downy seed-heads provide the ideal background to a chocolate flowered fritillaria. : Treasure trove of alpine gems

This Asiatic hybrid gentian thrives in its sunny spot on the bank. : Treasure trove of alpine gems

Gentiana verna is smothered in sky-blue blooms. : Treasure trove of alpine gems

Noeline and John Gillies built their ‘‘retirement’’ garden, Rakiura, in Omarama after they moved from Rangiora between the Christchurch earthquakes, bringing with them their alpine garden collection of more than 600 potted plants. : Treasure trove of alpine gems