Scientific name: Coleus zeylanicus. Name in different languages:- English: Iruvale. Hindi: valak. Malayalam: Iruvale.
Coleus zeylanicus (Iruvale), botanically known as coleus zeylanicus, belongs to the lameaceae family and is a herb that has high demand in the market. A feature of it is that, it can be harvested within 8 months time. It is considered as the best medicine to increase the digestion. Also it is good medicine against urinary tract diseases and indigestion. It is an important ingredient in the ayurvedic medicine devashta gandham.
For cultivating Coleus zeylanicus (Iruvale), the land should be devoid of water logging and also should get enough sunlight. This can also be grown as an inter-crop. The stems are used for propagation. The land is ploughed thoroughly to discard stones and the stems are planted on the heaps made on it. In the land we should add dried cow dung and bonemeal. While giving fertilizer, irrigation is a must and also deweeding should be done for the first 2 months and later the plants will itself ward off the weeds. It can be cultivated during any season and once the sapling grows, manure like cow dung and ash can be added within 90 days if necessary. In 8 months time, the plant is ready for harvesting. The Coleus zeylanicus (Iruvale) plant is uprooted and sold in markets.