Many types of cereals, pulses, spices, oil seeds and herbs are traded in the agriculture market of Neemuch. Cereals such as wheat, barley, maize or corn, jowar. Spices such as coriander, fenugreek, ajwain, poppy seeds or posta, jeera, black cumin or kalongi, halim seeds, suwa, tukmaria. Pulses such are gram, urad, moong, masoor, peas. Oil seeds such as soybean, black mustard, yellow mustard, flax seeds, groundnut, sesame seeds, taramira seeds, castor seeds, dolmi and many more agri products such as garlic, onion, guar seeds, isabgol seeds. Neemuch is a prominent trading centre of herbs in India and is the only auction and trading centre of ashwagandha roots (Indian ginseng, withania somnifera) in the world. More than 500 kinds of herbs are traded in Neemuch. Majorly they are ashwagandha, kalmegh, shatawari, safed musli, stevia leaves, giloy, and babul. Neemuch is a dominant trading place in the food processing industry and has many cooking oil mills, solvent extraction plants, pulses processing plants, dehydration plants, herbal extraction plants and isabgol husk plants. Neemuch district is one of the largest producers of opium in the country. Neemuch also has one of the only two opium factories in India. The climate of Neemuch district is apt for the production of opium and thus the opium trade is one of the major cultivated crops in the region. Other major cultivated products are oranges, lemons, red and pink roses and numerous herbs. Major exportable items are: isabgol, ashwagandha and many kind of herbs, methi, ajwain, coriander, soybean products like oil, de-oiled cake, soya paneer, soya papar, soy milk, garlic powder, onion powder, dehydrated flakes of onion and garlic, red chili powder, leather garments, and artificial jewelry. Welspun Solar MP project, Asia's largest solar power plant, inaugurated by Narendra Modi, as BJP's prime ministerial candidate. It is a 151 megawatt photo-voltaic power station constructed at a cost of 1,100 crore rupees (about $182,000,000) on 305 hectares (750 acres) of land operating since February 2014 at Neemuch.