When people think of Gladiolus, the plants that most often come to mind are those tall-spiked large-flowered hybrids derived primarily from South African species. However, this iris family (iridaceae) genus includes 180-odd species of corms distributed from Europe to western Asia and South Africa, many of which are quite different from the showy hybrids. Those species with less colorful flowers are sometimes scented. The name Gladiolus comes from the Latin gladius (a sword), and refers to the long sword-shaped foliage of most species; this feature has also given rise to the common name, sword lilies. Roasted Gladiolus corms were a food source for southern African tribes and are reputed to taste like chestnuts.
CULTIVATION
Plant the corms in full sun in well-drained soil, at 4 times their own depth. In cold areas corms will survive outdoors if planted below freezing depth; othersie lift them and store dry for winter. Propagation is by growing on the tiny cormlets.
Top Tip
If growing gladioli for cut flowers, choose cultivars- with their large showy blooms- rather than species. Cut when the lower flowers open.
CULTIVATION
Plant the corms in full sun in well-drained soil, at 4 times their own depth. In cold areas corms will survive outdoors if planted below freezing depth; othersie lift them and store dry for winter. Propagation is by growing on the tiny cormlets.
Top Tip
If growing gladioli for cut flowers, choose cultivars- with their large showy blooms- rather than species. Cut when the lower flowers open.
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