Today, New South Wales waratahs are grown commercially in Australia north of Sydney and in the Dandenong Ranges near Melbourne. They are also grown commercially in New Zealand and in Israel, and also in Hawaii, where they have been grown since 1961. One major challenge in commercial production is that in any one location the flowering season is generally short (five weeks total, with only small numbers in the earliest and latest weeks). The season for cut flowers may be extended, however, by growing plants at different latitudes. The vase life of a cut waratah is 10 to 14 days, and cut flower waratahs can be revived somewhat by water.