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Amaryllis is a bulbous plant, with each bulb being 5-10 cm in diameter. It has several strap-shaped, green leaves, 30-50 cm long and 2-3 cm broad, arranged in two rows. The leaves are produced in the autumn or early spring in warm climates depending on the onset of rain and eventually die down by late spring. The bulb is then dormant until late summer. The plant is not frost-tolerant, nor does it do well in tropical environments since they require a dry resting period between leaf growth and flower spike production.

From the dry ground in late summer (August in zone 7) each bulb produces one or two leafless stems 30-60 cm tall, each of which bears a cluster of 2 to 12 funnel-shaped flowers at their tops. Each flower is 6-10 cm diameter with six tepals (three outer sepals, three inner petals, with similar appearance to each other). The usual color is white with crimson veins, but pink or purple also occur naturally. The common name "naked lady" stems from the plant's pattern of flowering when the foliage has died down. [2]

The species was introduced into cultivation at the beginning of the eighteenth century. They reproduce slowly either by bulb division or seeds and have gradually naturalized from plantings in urban and suburban areas throughout the lower elevations and coastal areas in much of the West Coast since these environments mimic their native South African habitat.

Flowers of the trigger plant (common in bushland around Sydney, NSW, Australia). The flowers have "spring-loaded" tube (which contains the style and anthers) the triggers are on the main part of the flower. When an insect lands on the flower, the triggers (white) are tripped & the tube swings around to strike the insect on the back, dabbing it with pollen.