Phytotoxicity refers to the damage caused by the misapplication of chemicals to plants.
Herbicides are supposed to be toxic to plants, but sometimes beneficial treatments can have a negative effect, too.
Even the most benign treatments can become phytotoxic if too much is used. Each plant is unique in how they respond to horticultural oils, insecticidal soaps, and other treatments. Read labels thoroughly before you apply a treatment, especially when they contain emulsifiers and solvents. Do your plants a favor and follow the directions.
Causes of phytotoxicity
Phytotoxicity can occur when you use old chemicals in new ways, new chemicals in the wrong way, or the right chemicals at the wrong time. Some plant species are sensitive to certain chemicals, and some life stages are vulnerable to all treatments. Water-stressed plants are more susceptible to phytotoxicity.
Signs of phytotoxicity
Plants affected by phytotoxicity may show any of these symptoms:
You can prevent phytotoxicity with these good practices:
Plants affected by phytotoxicity will generally recover, but not always. Provide phytotoxic plants with a little TLC and an extra drink of water. And remove the cause whenever possible.
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