This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
This noble South African bulbous plant has long, sword-like leaves, and tall erect racemes of drooping white bell-shaped flowers in summer. It flourishes in good and well-drained garden soil, but is only really hardy in the most-favoured spots. It is better to lift the bulbs in late autumn and store till spring. At this season bulb merchants sell a large number. The flower spikes are good for cutting, but they are not likely to be grown extensively for market work. The same may be said of G. princeps, which is very similar, but the white flowers have a tinge of green in them.