Weeds compete with productive crops or pasture, ultimately converting productive land into unusable scrub. Weeds can be poisonous, distasteful, produce burrs, thorns or otherwise interfere with the use and management of desirable plants by contaminating harvests or interfering with livestock.
Weeds cause cracks in walls , leading to expensive repairs to your house. Some weeds are known to cause allergic and skin reactions like asthma and dermatitis. They create breeding grounds for mosquitoes, rats, insects, scorpions and snakes and are a very serious fire hazard.
Weed control is important in agriculture. Methods include hand cultivation with hoes, powered cultivation with cultivators.
Mechanical or manual weeding provides, at best, temporary or partial relief as most weeds are extremely stubborn and grow back very fast.