Some of the species of this genus are used in flower gardening. L. grandi-florum is a pretty, deep rose-colored, summer annual. L. trigynum is the species that is sold for a winter blooming plant. It is not likely to become very popular as a house plant on account of its dropping its petals so quickly, although for the conservatory it is a most showy plant and is always in the best of order about Christmas time with its bright yellow blossoms. When supplied with pot room and plenty of water it makes a shapely, rounded plant, covered with its bright yellow flowers. It is often attacked by red spider and needs daily syringing when in the greenhouse. A night temperature of 50 degrees does it well.
It roots freely from the young growths in March and should be planted out of doors in a light soil at the end of May. It will need constant pinching to keep it compact, and lifts with the greatest ease in September. Its flowers come in clusters at the axil of the leaf and although a flower lasts but a few days there is such an abundance to take its place that the plants for a month or more are extremely showy.