Irmscher 1959
China
Section Coelocentrum
Since its discovery in China in 1959, the “Iron Cross” begonia quickly became famous as a houseplant. It is now sold almost everywhere in the world, to the great delight of enthusiasts.
Appearance
This is a rhizomatous begonia. The unusual pattern of its leaves is instantly recognisable: broad blackish-brown markings along the veins form a cross on the bright green blade. The leaf surface is puckered and covered in stiff hairs. Abundant greenish-white flowers appear above the foliage from late spring into summer.
Culture
It is a fairly easy plant if you give it a very bright position, sparing watering and good air circulation. This begonia is particularly prone to powdery mildew when temperatures are too low and humidity is high. Grow it in narrow, shallow pots or in terracotta bowls.
Propagation
Sowing seed produces a large number of plants, but leaf-section and rhizome cuttings are also fairly easy in spring and summer.