Why ozone is known as 'chemical weed ' ?

Ozone is an inorganic molecule and a light blue gas with a pungent odor that is prevalent in the stratosphere just below the atmosphere of the earth. Without ozone, plants and animals would be receiving so much radiation from the sun that it would be difficult, if not impossible, for life to even survive here. The effects of no ozone to protect these harmful rays would be that all life here on earth would soon burn up, essentially. Although most associated with the atmosphere, ozone is also a powerful oxidant with many industrial and consumer uses. However, it must be used with extreme caution. The high oxidizing potential of ozone causes damage to mucous and respiratory tissues in animals and also damages tissue in plants at extremely high levels. In commercial agriculture, ozone can be used in conjunction with other chemicals and gases as a control for certain noxious weeds or pests.