Summary: Gladiolus undulatus is a bulb in the Iridaceae family.

Botanical name: Gladiolus undulatus L. Family: Iridaceae Origin: South Africa Common name: gladiolus Hardiness: zone 9 (around -7°C) Gladiolus undulatus is a bulb (corm) from the temperate regions of South Africa. Vegetation takes place from late November to June. Flowering takes place in May-June. July to November is the dormant period, with no vegetation. It is native to south-western South Africa, where it grows along roadsides, in disturbed areas or in wetlands in winter. When in flower, it reaches 40-70 cm in height. We grow it in greenhouses on the edge of the tarpaulin, where there’s moisture in winter, and in the garden. It should be grown in partial shade.