Plants can be damaged by a number of toxic chemicals. Pollutants such as ozone may damage sensitive plants, causing leaves to die or become discolored.
Herbicides may cause plants to become spotted, develop necrotic areas, or become distorted. Glyphosate (Round up) acts rapidly with a yellowing or reddish purple discoloration developing on new growth. 2,4-D causes twisting of stems and distortion and crinkling of leaves.
An excess of minerals or nutrients can also cause damage. Plants may wilt, be stunted, become discolored, or appear scorched or brown around leaf margins.
The pesticide information on this page may become out of date as products and active ingredients change or become unavailable. Some of the pesticides listed are only available for use by licensed pesticide applicators. No endorsements of named products are intended, nor is criticism implied of products not mentioned.
