New Zealand flax. If black is becoming the new gold, then this small Phormium is sure to be worth its weight. Growing to no more than 3’, its dark narrow foliage is a rich purplish-black. Smashing combined with Geranium harveyi, Artemisia ‘Silver Mound’ or even silvery grasses like Seslaria caerulea, ‘Platt’s Black’ may just be the horticultural equivalent to the “little black dress”. Hardy to 20F. New Zealand.