The best all-purpose copper fungicide for trees and fruit trees is a liquid copper concentrate that covers a wide range of species and diseases at once, from apple scab and fireblight on fruit trees to anthracnose and powdery mildew on ornamentals, rather than a product formulated for just one problem.

Which Diseases Does an All-Purpose Copper Fungicide Control?

Liquid Copper Fungicide Spray controls anthracnose, bacterial leaf spot, fireblight, brown rot, apple scab, bacterial canker, crown and collar rot, powdery mildew, black spot, leaf curl, downy mildew, and several other fungal leaf spots in a single product. That breadth is what makes it all-purpose rather than disease-specific, covering most of the fungal and bacterial problems a home orchard or ornamental tree is likely to run into.

Which Trees and Fruit Trees Is It Labeled For?

It's labeled for apple, cherry, peach, and pear trees among fruit varieties, along with citrus, dogwood, magnolia, live oak, sycamore, walnut, and several palm species among ornamentals and shade trees. That range covers most of the fruit and shade trees a home orchard or yard is likely to include, rather than being restricted to one species or family.

How Do I Mix and Apply an All-Purpose Copper Fungicide?

Liquid Copper Fungicide Spray is mixed at one gallon of spray solution per 200 square feet of garden area, or up to two gallons for a large tree, then applied to thoroughly wet the foliage until runoff. Application should start at the first sign of disease and repeat every 7 to 14 days as needed, shortening the interval during frequent rain. Testing a small area first is worth doing, since the copper can discolor some foliage and blossoms.

Frequently Asked Questions

Can copper fungicide damage metal or painted surfaces nearby?

Yes. It can react with metal and masonry surfaces such as galvanized roofing, and contact with painted structures like cars, houses, or furniture should be avoided during application.

Can copper fungicide be used on vegetables as well as trees?

Yes. Vegetables are also listed among the plant types it's labeled for, alongside roses, hibiscus, lilacs, and other ornamentals, in addition to trees and fruit trees.

How much does Liquid Copper Fungicide Spray cost?

$18.95 for a 1-pint concentrate that treats 5 to 6 large trees.

Is copper fungicide available in Canada?

No. Liquid Copper Fungicide Spray is not sold in Canada.