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UC IPM Home > Home,
Gardens, Landscapes, and Turf > Pesticides > Copper
Compounds
How to Manage Pests
Pesticide Information
Copper compounds
Copper sulfates and various others
Type
Inorganic fungicide/bactericide.
Plant uses
Ornamentals, fruit trees, and a few vegetables. It may burn leaf edges. Do not use on crucifer family
plants. Check labels for recommended crops.
Pests controlled
A wide variety of fungi and bacteria including bacterial cankers, leaf blights, leaf spots, peach
leaf curl, and shot hole.
 Hazards to people
Causes severe eye irritation and can injure
eye tissue; can cause skin irritation.
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 Hazards to wildlife
Highly toxic to fish.
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 Hazards to beneficials
Low.
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Potential period of activity after treatment
Long; several weeks if not washed off.
Precautions and safety equipment
Less phytotoxic and easier to handle than bordeaux mixtures. Minimize your exposure to pesticides.
Unless otherwise stated on the label, wear rubber or neoprene gloves and boots, eye protection that covers the brows
and
temples,
and long
pants,
a long-sleeved
shirt,
and a
hat that can be washed after each use.
Active ingredient
Various, including metallic copper and copper oleate.
Application tips
Must be applied as a protectant before the fungi arrive
and begin the infection. May be used as dormant sprays or in the spring.
Do not mix fixed coppers with other pesticides as plant injury can result.
Always check the label before purchasing or applying a pesticide product for a specific pest on a specific plant
to be sure it can be applied. Follow label directions precisely.
WARNING ON THE USE OF CHEMICALS
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