Gladiolus dalenii of the Iridaceae family, is one of the most widely distributed species of gladiolus, ranging from eastern South Africa and Madagascar throughout tropical Africa and into western Arabia. It is the main parental species of the large flowering grandiflora hybrids. This species is also unusual in its genus in including diploid, tetraploid and hexaploid races. The hybrids produced from it are often tetraploids.
It produces five tall flower spikes of yellow to scarlet flowers, often streaked red over a yellow ground colour, generally with a yellow throat. The genus name Gladiolus is derived from the Latin gladiolus, meaning a small sword, and refers to the narrow, sword-shaped leaves produced by many Gladiolus species. The species was named in 1828 after Cornelius Dalen, Director, Rotterdam Botanic Gardens who introduced the species into gardens in Europe.
The plant prefers a light sandy neutral to slightly acid soil with a pH between 6.5 and 7 in a sunny sheltered position. Gladiolus dalenii is a deciduous evergreen perennial. It grows up to 2 m tall. Leaves erect, 20 mm wide, grey-green, in a loose fan.
This post is part of the Floral Friday Fotos meme.