It's the must-see flower of early summer.
The Puya alpestris ssp. zoellneri (blue puya) is a spectacular South American beauties stand two metres tall with deep turquoise flowers.
It's an extraordinary, otherworldly display of rare bright turquoise blooms and one not to be missed at the Blue Mountains Botanic Garden Mount Tomah.
With 2m tall spikes, the exotic 'Puya' or Puya alpestris ssp. zeollneri, colloquially known as 'sapphire towers', hail from the mountains of Chile and each plant can take seven to ten years to come into flower.
Ornamental gardens and nursery supervisor Ryan Newett, said the seeds of the Puyas at Mount Tomah were wild collected from Chile in the late 1980s by their botanists.
"Given each plant can take up to ten years to flower, it takes a lot of work and luck to ensure such a striking floral display," he said. "Puya are strangely beautiful like nothing else in the plant world. They attract all manner of insect and birdlife which fly in to enjoy the nectar."
Honeyeaters, the Red Wattlebirds, and even the shy Eastern Spinebills will make an appearance for Puya nectar, so the display will be worthwhile for bird lovers too," he said.
A close relative of Puya alpestris, Puya raimondii, flowers only once in its 85 year life span and then dies. Seedlings of Puya raimondii have been planted this year at the gardens.
The Puyas will be blooming until the end of November and may extend into mid-December, depending on the weather. Puyas grown in the nursery are available for sale.
