Phormium ‘Platt’s Black’ is a relatively recent New Zealand Flax cultivar with leaves in the most remarkable shade of purple-brown that is almost black. One of the more compact Phormiums, this has an elegant weeping habit that makes it eminently suited to growing in a pot.
Grow moist, well-drained, fertile soil in full sun, will also tolerate partial shade. Foliage may be damaged by cold winds and hard frosts. Cut back the flower stalks to the base after they have finished.