Best Fungus Spray For Trees: Compare 10 Tree-Care Options

#1 · Best Overall

1. Monterey Liqui-Cop

• Weight: 1.24 kg

Best for: Fruit-tree seasonal copper treatment.

Why it ranks #1: Lists fruit trees and nut crops, covers diseases including anthracnose and leaf spot, and is intended for dormant and growing-season use.

Use across both dormant and growing seasons gives Monterey Liqui-Cop a useful seasonal range for tree owners planning disease prevention. The copper fungicide lists fruit trees and nut crops alongside vegetables and ornamentals, and names diseases such as anthracnose, brown rot, blight, downy mildew, botrytis blight, and leaf spot.

The dormant- and growing-season use supports treatment planning across different stages of plant care, rather than limiting the product to one seasonal window. Its listed crop range includes fruit trees and nut crops, so gardeners with mixed plantings can use the same product across several categories. The disease list supplies concrete targets for evaluation, while the included measuring spoon can help with measured preparation. Directions emphasize wearing eye protection and washing after mixing and applying.

Skip it if you prefer a ready-to-use spray with no measuring or mixing; Bonide Captain Jack’s Copper Fungicide is listed as ready to use.

A fit for fruit- and nut-tree growers who want a copper product with named disease targets and use in dormant as well as growing seasons. Account for mixing and the stated safety precautions when choosing it.

Listed on Amazon as: Monterey Liqui-Cop Fungicidal Spray, 32 oz with Measuring Spoon

#2 · Best Ready-to-Use

2. Bonide Captain Jack's Copper

• Weight: 16 oz
• Form: Spray

Best for: Organic garden ready-to-use spray.

Why it ranks #2: Ready-to-use copper spray is approved for organic gardening and lists peach leaf curl, blight, black spot, and powdery mildew among its targets.

Ready-to-use liquid copper gives gardeners a spray they can apply without first mixing a concentrate, while its organic-gardening approval suits produce-focused routines. Bonide lists use on fruits, vegetables, nuts, herbs, and flowers, and notes application can continue up to harvest day, making it a flexible option for a varied garden.

The formula targets listed problems including blight, black spot, powdery mildew, and peach leaf curl, so one spray can address several common garden disease concerns. Directions call for thorough coverage on both leaf surfaces and repeat applications every 7–10 days, a useful routine to factor into ongoing care. Organic-gardening approval and the stated ability to apply up to harvest day are relevant for edible plantings; this is a spray treatment, not a systemic product.

Skip it if you want systemic disease control rather than a repeated surface spray; Bonide Infuse offers systemic control for trees and shrubs.

A practical match for gardeners treating edible plants and ornamentals with a ready-to-use copper spray. Its organic-gardening approval and harvest-day use are useful boundaries to note, while the repeat-application schedule calls for continued attention.

Listed on Amazon as: Bonide Captain Jack's Copper Fungicide, 32 oz Ready-to-Use Spray for Organic Gardening, Controls Common Diseases, for All Plants

#3 · Best Systemic Option

3. Bonide Infuse Systemic

• Weight: 2.3 lb
• Form: Spray

Best for: Systemic lawn and landscape care.

Why it ranks #3: Ready-to-spray systemic disease control explicitly lists trees and shrubs, with targets including rust, blight, powdery mildew, scab, and leaf spot.

Systemic disease control across lawns, trees, and shrubs makes Bonide Infuse relevant to landscape owners managing more than a single plant type. The ready-to-spray product also lists roses and flowers, and is described as controlling more than 30 diseases, including rust, blight, powdery mildew, scab, and leaf spot.

Its ready-to-spray format can simplify application across a landscape, while systemic action distinguishes it from a surface-only treatment approach. The broad listed use—from turf to trees, shrubs, roses, and flowers—offers one disease-control option for mixed plantings. Named targets such as rust, powdery mildew, scab, and leaf spot help buyers assess relevance to their plants. The supplied details do not specify application intervals, so consult the product directions for scheduling and coverage.

Skip it if you need a named copper ingredient or a ready-to-use edible-crop spray; Bonide Captain Jack’s Copper Fungicide is approved for organic gardening.

Choose it for mixed lawns and landscapes where systemic control and ready-to-spray application suit the job. Its tree and shrub coverage is useful, but buyers should check the directions for the application schedule before planning treatment.

Listed on Amazon as: Bonide Infuse Systemic Disease Control Lawn & Landscape

#4 · Broad Tree-Crop Use

4. Southern Ag Ornamental Tree Fungicide

• Weight: 2 lb
• Form: Spray

Best for: Broad-spectrum ornamental and tree spray.

Why it ranks #4: Lists ornamentals, conifers, and certain tree and orchard crops, with chlorothalonil and disease targets including leaf spot, rust, and scab.

A spreader sticker is included with this easy-to-mix fungicide, helping users prepare an application for listed ornamental, vegetable, and tree crops. Southern Ag names conifers and certain tree and orchard crops, and its broad-spectrum disease control includes leaf spot, foliar blight, powdery mildew, rust, and scab on ornamentals.

The easy-to-mix formulation offers a preparation route for users treating several plant categories, while the included spreader sticker is part of the application setup. Its listed uses extend from ornamentals and bulbs to conifers, vegetables, and certain tree and orchard crops. Disease targets vary by crop: ornamental examples include leaf spot, foliar blight, powdery mildew, rust, and scab, while the supplied description lists additional vegetable diseases. Check the label for the applicable tree crops and rates.

Skip it if you need an explicitly broad fruit-tree disease list; Monterey Liqui-Cop names fruit trees and targets such as brown rot and anthracnose.

A candidate for growers treating listed ornamentals, conifers, or certain orchard and tree crops with a mixable spray. Because the tree-use wording is specific rather than universal, check the label for your crop and disease before applying.

Listed on Amazon as: Southern Ag Liquid Ornamental, Tree & Vegetable Fungicide, 1 Quart

#5

5. Ferti-lome Fungicide 5

• Weight: 2 lb
• Form: Oil

Best for: Organic-listed mixed-plant disease care.

Why it ranks #5: Ready-to-spray formula lists trees, shrubs, and nuts for indoor or outdoor use, and covers listed diseases and bacteria; it is OMRI listed.

OMRI listing for organic gardening sets this ready-to-spray fungicide apart for growers seeking an organic-listed option across indoor and outdoor plantings. Ferti-lome names trees, shrubs, nuts, vegetable gardens, flower beds, indoor plants, lawns, and tropicals, with control of listed blights, molds, rots, spots, specks, and mildews.

The ready-to-spray format can suit users who want to avoid preparing a concentrate, while the broad indoor and outdoor plant list accommodates mixed home and garden care. Disease and bacteria control extends across several listed problem groups, although the supplied information directs buyers to the label for complete disease lists and treatment details. Because trees and shrubs are explicitly included, it can fit landscape use as well as vegetable gardens and indoor plants.

Skip it if you need a named tree-disease list before selecting a treatment; Monterey Liqui-Cop names fruit-tree diseases such as brown rot and leaf spot.

A suitable candidate for gardeners wanting one organic-listed spray for trees, shrubs, and varied indoor or outdoor plants. Check its label for the complete disease list and treatment instructions before relying on it for a particular tree problem.

Listed on Amazon as: Fertilome (16114) Fungicide 5 Ready to Spray, Plant Disease and Bacteria Control, OMRI Listed (32 oz.)

#6

6. Southern Ag Liquid Copper

• Weight: 9 lb
• Form: Liquid

Best for: Large-scale copper disease treatment.

Why it ranks #6: Copper formula lists many fruits and ornamentals and targets fungal and bacterial leaf spots, rust, and blights, though tree-specific detail is limited.

A one-gallon liquid supply makes Southern Ag Liquid Copper Fungicide a practical format for gardeners treating multiple listed areas. Its 31.4% copper ammonium complex formulation is labeled for many fruits, vegetables, turfgrasses, live oak, and ornamentals, with control of fungal and bacterial diseases as well as moss and algae in specified uses.

The formulation works with hose-end sprayers, giving users an application method suited to covering larger areas without relying only on hand spraying. Its labeled uses include many fruits and ornamentals, while live oak is specifically listed for moss control and turfgrass for algae control. Listed targets also include fungal and bacterial leaf spots, rust, and blights. The gallon quantity may suit broader treatment needs, but tree-specific use should follow the label’s stated crop and target directions.

Skip it if you need named fruit-tree disease targets and seasonal use; Monterey Liqui-Cop lists fruit trees and diseases including brown rot and anthracnose.

A fit for users treating broad areas with a hose-end sprayer, particularly where listed fruit, ornamental, turf, or live-oak uses apply. Its specific live-oak claim is for moss control, so check the label for other tree needs.

Listed on Amazon as: Southern Ag Liquid Copper Fungicide, 1 Gallon

#7

7. BioAdvanced 3-in-1 Spray

• Weight: 1.5 lb
• Form: Spray

Best for: Multi-pest tree and garden care.

Why it ranks #7: Versatile ready-to-use spray is listed for trees and controls some fungal diseases, but its combined insect and mite focus makes it less specialized.

A three-in-one formula combines insect, disease, and mite control, letting gardeners address several listed plant problems with one ready-to-use spray. BioAdvanced names trees among its suitable plants and lists protection against powdery mildew and black spot, alongside control of aphids, spider mites, Japanese beetles, and other pests.

The systemic rainproof protection lasts up to 30 days, which can reduce the need to reapply after rain and provide a defined interval for care. Its ready-to-use format skips concentrate mixing, and the listed disease and pest targets let users address more than fungal concerns in one product. For tree owners also managing insects or mites, that combination is relevant; the supplied information does not identify specific tree species or diseases beyond the stated examples.

Skip it if you need a fungicide-only approach or tree-specific disease instructions; Monterey Liqui-Cop lists fruit trees and a wider set of named diseases.

Consider it for tree and garden care when insect, mite, and fungal concerns overlap and a ready-to-use format is helpful. Its broad combination is the point; buyers seeking a more specifically named tree-disease list may prefer another option.

Listed on Amazon as: BioAdvanced 3-in-1 Insect, Disease, and Mite Control Spray – 24 fl oz

#8

8. Quest Reliant Systemic

• Form: Liquid

Best for: Systemic nursery and landscape disease care.

Why it ranks #8: Systemic concentrate lists landscape ornamentals and targets diseases including blights, scabs, leaf spots, and cankers, but tree uses are not explicit.

Foliage and root absorption followed by systemic distribution gives Quest Reliant a whole-plant disease-control approach. The concentrate is described as activating a plant’s natural defenses and lists targets including Phytophthora, downy mildews, apple scab, blights, cankers, and root rots across nursery, landscape, greenhouse, and other settings.

Because the product is absorbed through both foliage and roots and distributed systematically, its stated activity reaches beyond the site of application. The concentrate mixes with water, which lets users prepare a treatment for listed landscape, nursery, greenhouse, turf, and lawn contexts. Its extensive pathogen list includes apple scab, cankers, blights, and root rots, making it relevant to several disease concerns; follow the label to determine rates and suitability for a particular tree.

Skip it if you want a ready-to-spray systemic landscape product; Bonide Infuse is ready-to-spray and lists trees and shrubs.

Consider it for landscape or nursery users seeking systemic activity and a broad named disease list. The concentrate requires preparation, and the product label should guide whether its listed uses and rates fit your specific tree.

Listed on Amazon as: Quest Reliant Systemic Fungicide 32oz/1 Quart

#9

9. Atticus Gravex 20EW

• Form: Liquid

Best for: Concentrate for systemic disease control.

Why it ranks #9: Concentrate has stated curative and preventive properties and is absorbed through leaves and roots, but the supplied details do not specify tree uses.

Curative and preventive activity gives Atticus Gravex 20EW two roles in disease management: addressing existing disease and halting future development. The myclobutanil concentrate is described as absorbing into plant leaves and roots, then fighting disease from inside the plant, a systemic approach for buyers preparing a treatment mix.

Leaf and root absorption supports the stated inside-the-plant action, while curative and preventive properties address both current disease and future development. The product is supplied as a 16-ounce concentrate, so users should expect to prepare a mixture rather than apply it straight from the container. The available information does not specify tree species, named diseases, or mixing rates; consult its directions to establish suitability and application instructions for a particular tree.

Skip it if you want named tree targets and ready-to-spray application; Bonide Infuse lists trees and shrubs and comes ready to spray.

Consider it if systemic, curative-and-preventive activity is the priority and you are prepared to mix a concentrate. Since the supplied details do not specify tree targets or mixing rates, verify label directions for your intended use.

Listed on Amazon as: Atticus Gravex 20EW Fungicide (16oz) – Myclobutanil Concentrate

#10

10. Atticus Gunner 14.3 MEC

• Weight: 2 lb
• Form: Liquid

Best for: Landscape and lawn disease prevention.

Why it ranks #10: Propiconazole concentrate targets more than 20 diseases, but the supplied description emphasizes lawns and landscapes rather than tree treatment.

A microemulsion concentrate is highlighted for easier mixing and greater product stability, helping simplify preparation for landscape disease prevention. Atticus Gunner 14.3 MEC contains 14.3% propiconazole and is described as protecting against more than 20 plant fungi, including brown patch and leaf spot, with lawn and landscape use emphasized.

The easy-mix MEC formulation can make concentrate preparation more manageable, while its stated greater stability is a practical formulation benefit. Broad-spectrum protection against 20-plus diseases, including brown patch and leaf spot, gives lawn and landscape users named targets to consider. The product is specifically presented for protecting lawns, so tree owners should assess whether its label covers their intended tree and disease rather than assuming every landscape use applies.

Skip it if you need a product explicitly listing fruit trees and nut crops; Monterey Liqui-Cop names both crop types and multiple tree diseases.

A possible fit for lawn and landscape managers seeking a mixable concentrate with broad disease targets. The listed information emphasizes lawns, so tree owners should confirm that the product directions cover their particular species and disease.

Listed on Amazon as: Atticus Gunner 14.3 MEC Propiconazole Fungicide (32oz) – Protect Your Lawn