Doryanthes
Family: Agavaceae
This magnificent native Australian genus of two species has gained popularity recently. Most unusual and striking plants, they are half-lily, half-palm in appearance. Their stiff, sword-like foliage and rich red flower stems, 4-5 m (13-16 ft) high, make them wonderful accent plants.
Species
D. excelsa, Gymea lily, generally found in damp, coastal areas of Queensland and New South Wales, is an imposing plant, with broad, lance-shaped, light green leaves, up to 2 m (6 ft) long, and large heads of scarlet flowers borne on long, straight spikes, 4-5 m (13-16 ft) tall.
D. palmeri, spear lily, is a native of Queensland, with red, funnel-shaped flowers on stems which tend to curve downwards. It grows to 5 m (16 ft) or more.
Cultivation
Doryanthes are grown in a cool greenhouse or conservatory in climates that are prone to frost. They could be stood outdoors for the summer, for instance, on a sunny patio. Grow them in pots or tubs of soil-based potting compost and provide maximum light. Water normally in the growing season but keep only slightly moist in winter. Propagate from seed sown in spring and germinate at 13°C (55°F). Alternatively, remove and pot up rooted suckers.
Climate
Zone 10.