Monday, May 11, 2009

Were do gladiolus plants come from?

what kind of colors do gladiolus have? how long do they stay around?|||The genus Gladiolus contains about 260 species, of which 250 are native to sub-Saharan Africa, mostly South Africa. About 10 species are native to Eurasia. There are 160 species of Gladiolus endemic in southern Africa and 76 in tropical Africa. The species vary from very small to the spectacular giant flower spikes in commerce.





The fragrant flower spikes are large and one-sided, with secund, bisexual flowers, each subtended by 2 leathery, green bracts. The sepals and the petals are almost identical in appearance, and are termed tepals. They are united at their base into a tube-shaped structure. The dorsal tepal is the largest, arching over the three stamenss. The outer three tepals are narrower. The perianth is funnel-shaped, with the stamens attached to its base. The style has three filiform, spoon-shaped branches, each expanding towards the apex.





The ovary is 3-locular with oblong or globose capsules, containing many, winged brown, longitudinally dehiscent seeds.





These flowers are variously colored, pink to reddish or light purple with white, contrasting markings, or white to cream or orange to red.





In temperate zones, the corms should be lifted in autumn and stored over winter in a frost-free place, and replanted in spring. Plants are propagated either from small cormlets produced as offsets by the parent corms, or from seed; in either case, they take several years to get to flowering size.

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