Best Fungicides for Trees and Shrubs: 5 Options Compared
The best fungicide for trees and shrubs depends on the disease you need to control and whether you also want insect or mite control. Bonide Captain Jack’s Copper Fungicide is a focused option for common fungal diseases, while BioAdvanced 3-in-1 products combine disease control with pest control. Ferti-lome Liquid Systemic Fungicide II offers a ready-to-use spray for listed diseases on trees and other plants. Compare the product labels with the plant and disease you are treating before applying.
| Product | Best For | Format |
|---|---|---|
| BioAdvanced 3-in-1, 32 fl oz | Combining disease and pest control | Spray |
| Bonide Captain Jack’s Copper | Organic gardening and common diseases | Ready-to-use spray |
| Ferti-lome Systemic Fungicide II | Listed diseases on trees and other plants | Ready-to-use spray |
| Bonide Captain Jack’s Copper Concentrate | Users seeking concentrated copper fungicide | Concentrate |
| BioAdvanced 3-in-1 Ready-to-Spray | Convenient application plus pest control | Ready-to-spray |
BioAdvanced 3-in-1 Insect, Disease, and Plant Mite Control
This 32-fluid-ounce product combines insect, disease, and mite control for outdoor plants, including roses, flowers, shrubs, and trees. Its listed disease targets include black spot and powdery mildew, and its listed pests include aphids, spider mites, adult Japanese beetles, and caterpillars.
Best for: Gardeners who need to address listed fungal diseases and insect or mite pests with one product. It was selected because the product information specifically names both shrubs and trees along with disease control.
Consider: The listed disease and pest targets are not universal. Check the label to confirm the specific plant and problem are covered before use.
Bonide Captain Jack’s Copper Fungicide Ready-to-Use
This 32-ounce ready-to-use copper fungicide is described as suitable for all plants and approved for organic gardening. Listed diseases include blight, black spot, powdery mildew, and peach leaf curl. The product information also says it can be used up until the day of harvest for organic produce; follow the label for use directions and restrictions.
Best for: Buyers seeking a ready-to-use copper treatment for a range of common plant diseases, including gardeners producing organic produce. It earns a place for its broad listed disease examples and simple spray format.
Consider: Ready-to-use packaging may be less suitable than a concentrate for buyers who specifically want to mix their own application. Confirm that the target disease and plant appear on the label.
Ferti-lome Liquid Systemic Fungicide II
This 32-ounce ready-to-use fungicide is described for preventing and controlling major fungal diseases on roses, flowers, lawns, and trees. Its listed targets include take-all patch, brown patch, dollar spot, and leaf spot, with additional diseases referenced on the label.
Best for: Buyers who want one ready-to-use product for listed fungal problems across trees and other plantings. It was selected because its product information explicitly includes trees and several named disease targets.
Consider: The named diseases include lawn conditions, so do not assume every listed use applies to every plant. Check the label’s plant-by-disease directions before spraying a tree or shrub.
Bonide Captain Jack Copper Fungicide Concentrate
This 16-ounce concentrated copper fungicide is intended for plant disease control and is approved for organic gardening. Its listed disease examples include blight, black spot, powdery mildew, and peach leaf curl. The product information notes suitability for organic produce and use up until the day of harvest, subject to label directions.
Best for: Gardeners who prefer a concentrate rather than a ready-to-use spray and want a copper product for listed diseases. Its disease examples overlap with the ready-to-use Bonide option, while the format is the key distinction.
Consider: A concentrate requires preparation according to its label, unlike a ready-to-use spray. Follow the specified mixing and application directions; do not infer a dilution rate from another product.
BioAdvanced 3-in-1 Ready-to-Spray
This 32-ounce ready-to-spray product combines insect, disease, and mite control for roses, flowers, trees, shrubs, and other ornamentals. Listed disease targets include black spot, powdery mildew, rust, and scab. Listed pests include aphids, adult Japanese beetles, and whiteflies. Product information states protection for up to 14 days.
Best for: Buyers who want convenient ready-to-spray application and a combination product for listed diseases and pests. It is a useful comparison with the other BioAdvanced option because it names rust and scab and states a protection period.
Consider: It is not a fungicide-only choice. If you need to treat a disease not listed, or want to avoid a combined insect-control product, check the label and consider a focused fungicide instead.
Buying Guide: How to Choose a Fungicide for Trees and Shrubs
Which disease are you treating?
Start by identifying the disease rather than choosing by broad terms such as “fungus” or “leaf spot.” Compare the plant and disease with the product label. These products list different targets: for example, BioAdvanced names black spot and powdery mildew, while Ferti-lome lists brown patch, dollar spot, and leaf spot. A product’s example list does not guarantee that every plant use is approved.
Do you want fungicide-only or combination control?
BioAdvanced 3-in-1 products combine disease treatment with insect and mite control. That may suit a buyer managing several listed problems at once. The Bonide copper products are presented as fungicides for plant diseases, making them a more focused comparison. Avoid choosing a combination product solely for convenience if its additional pest-control functions are not needed.
Should you choose ready-to-use or concentrate?
Ready-to-use sprays are intended for direct application as directed, while the Bonide concentrate requires label-directed preparation. Choose a format that matches your application needs and ability to follow mixing directions. Do not use directions from one product for another.
What should you check before application?
Read the complete label for approved plants, disease targets, application timing, frequency, precautions, and any harvest instructions. Apply only as directed. If the plant or disease is not clearly covered, consult the label or a local gardening professional before treatment.
Frequently Asked Questions
Can fungicide for trees also be used on shrubs?
Some products list both trees and shrubs, while others describe use on trees or broader plant categories. Check the product label for the specific shrub and disease before applying.
Which option also controls insects and mites?
Both BioAdvanced 3-in-1 products combine disease control with control of listed insects and mites. Their exact listed diseases and pests differ, so compare labels.
Are any of these products approved for organic gardening?
The two Bonide Captain Jack’s Copper products are described as approved for organic gardening. Follow each product’s label for permitted uses and directions.
Is a concentrate more effective than a ready-to-use spray?
The provided product information does not establish that one format is more effective. The key difference is application format: a concentrate requires preparation, while a ready-to-use product is supplied for direct application as directed.
Can I use any listed fungicide for powdery mildew?
No. Powdery mildew appears in the listed targets for the BioAdvanced 3-in-1 and Bonide copper products, but always confirm that the product label covers the specific plant and use.