Reader support helps keep the reviews honest and the site humming. As an Amazon Associate, I earn from qualifying purchases.7 Best Fungicide For Shot Hole Disease | Skip the Weak Sprays

Check Price on Amazon

The Ferti-lome Liquid Systemic Fungicide II is the ideal entry point for homeowners managing shot hole disease on stone fruit trees. Its propiconazole-based formula provides locally systemic action, meaning it penetrates the leaf tissue to stop the fungus from spreading internally after infection has begun. At 32 ounces of concentrate, this bottle goes a long way for a medium-sized orchard or a collection of ornamental cherry and plum trees.

Reports from users show it is highly effective when applied at the first sign of leaf spots, halting the progression of the disease on mature trees like oaks and maples, but the same mode of action translates perfectly to shot hole’s early stages. The liquid mixes readily with water and stays on the leaf surface long enough to be absorbed before rain. It also controls leaf spot, brown patch, and powdery mildew, making it a versatile tool for the whole yard.

One downside is that it does not list shot hole disease directly on the label as a specific target for all formulations, though the active chemistry is proven. You must apply it diligently during the spring bud break window and reapply after rain to maintain full protection.

Check Price on Amazon

Quali-Pro’s Propiconazole 14.3 is a professional-grade concentrate that delivers a much higher percentage of active ingredient than consumer formulations. With 14.3% propiconazole, you get powerful, long-lasting systemic protection that moves through the plant’s vascular system. This is the go-to product for large properties where shot hole disease has become a recurring problem on multiple cherry, laurel, or peach trees.

The microemulsion formulation reduces odor and provides excellent tank stability, which is critical when mixing with other fungicides for a rotation schedule. Users fighting brown patch on turf and orange rust on blackberries have confirmed that this concentrate halts aggressive fungal spread within a week of the first application. For shot hole, applying it at the first sign of small purple spots prevents the lesions from developing into the classic shot holes that cause leaves to drop.

Because it is a highly concentrated professional product, it requires careful measurement and full PPE during mixing and spraying. It is not intended for small ornamental plantings where a weaker, ready-to-spray formulation would be more convenient.

Check Price on Amazon

Bonide Fung-onil is the quintessential broad-spectrum protectant fungicide, leveraging chlorothalonil at a high 29.6% concentration to form a protective barrier on leaf surfaces. For shot hole disease prevention, spraying this on your trees just before bud break and continuing through wet spring weather provides a chemical shield that prevents Wilsonomyces carpophilus spores from germinating. It is the standard choice for conventional home gardeners who want a dependable, economical option.

Users consistently report it eliminates leaf spot and blight on tomatoes and ornamental shrubs after just two applications. For stone fruits, mixing it to label specifications and achieving full coverage on all twigs and buds is the key to success. The milky texture clings well to leaves, resisting wash-off from light rain better than some other protectants.

Chlorothalonil is strictly a contact protectant; it will not cure an active infection inside the leaf. If shot hole spots are already visible, you need a systemic product. It also leaves a visible white residue on sprayed surfaces, which some gardeners find unsightly on ornamental plants.

Check Price on Amazon

Select Source’s Propiconazole 14.3 offers identical chemistry to the Quali-Pro product but in a smaller 16-ounce bottle, making it a smart choice for those with a moderate number of trees. This propiconazole formulation provides excellent residual control with low use rates, meaning you get a lot of spray solution from a small bottle. Its low odor and high tank-mix compatibility make it an easy addition to integrated pest management programs that rotate with other chemistries.

Users fighting lawn fungus like brown patch and dollar spot often alternate this with azoxystrobin to prevent resistance. For shot hole, applying it in early spring as a systemic treatment helps protect new growth that is most vulnerable to infection. The locally systemic action ensures the fungicide moves into developing leaves, not just the surface they sit on.

The bottle design is the primary complaint; the opening can cause dribbling when measuring concentrate into a sprayer. Additionally, you must be disciplined about rotating with a different mode of action over multiple seasons to prevent fungicide resistance from developing in the pathogen population.

Check Price on Amazon

Bonide Revitalize is a biological fungicide that leverages Bacillus subtilis to trigger an immune response in plants, making them more resistant to diseases like shot hole. Approved for organic gardening, it can be used up until the day of harvest, which is a significant advantage for food-bearing stone fruit trees. Rather than directly killing the fungus, it works by colonizing the leaf surface and outcompeting pathogens while activating the plant’s own defense mechanisms.

For shot hole, this is best deployed as a preventive program, starting at bud break and continuing on a regular schedule through wet weather. Users note improvement with leaf spot on tomatoes and general plant health, though the results are slower and less dramatic than synthetic chemistry. It can be applied as a foliar spray or soil drench, and it is safe for an extensive variety of plants from vegetables to ornamentals.

The biological nature means it is less effective once a severe infection has already taken hold. It also has a noticeable odor that some users find unpleasant, though this dissipates quickly after application.

Check Price on Amazon

Southern Ag’s Biological Fungicide uses a different strain of beneficial bacteria—Bacillus amyloliquefaciens—that colonizes both the root zone and the leaf surface. This strain is particularly effective when applied as a soil drench because it establishes a protective barrier in the root system, preventing soil-borne pathogens from moving into the tree. For shot hole, this provides an additional layer of defense that many other fungicides do not address.

This product is a powerhouse for hydroponic and high-moisture environments; users report it saving water propagations from rot and controlling leaf miners and hornworms indirectly by strengthening plant health. It acts as a bio-fertilizer, darkening leaves and increasing vigor, which helps trees withstand shot hole pressure. Using it as a regular soil drench during the growing season keeps beneficial microbes active around the roots.

The bottle opening suffers from the same dribbling issue as the Select Source product. As with all biologicals, it works best as a preventive measure rather than a curative treatment for an established shot hole outbreak.

Check Price on Amazon

Garden Safe Fungicide3 is a 3-in-1 product combining clarified hydrophobic neem oil extract as a fungicide, insecticide, and miticide. For shot hole disease, neem oil works by smothering fungal spores and creating a hostile environment for the pathogen on the leaf surface. While it is the weakest chemistry in this lineup against a tough fungal pathogen, it is the most accessible for casual gardeners who need one bottle for everything from aphids to rust.

It comes in a convenient ready-to-use gallon with an attached sprayer, removing the need for mixing equipment. Users report great results on powdery mildew, black spot, and general leaf health on roses, hibiscus, and vegetables. It is EPA-approved for organic gardening and safe to use on edible crops up until harvest.

Neem oil is not systemic, so it cannot reach the fungus once it has penetrated the leaf cuticle. It may also cause phytotoxicity if applied during daytime heat or on stressed plants, requiring shade application and reduced dosage. For a serious shot hole outbreak, this product is best used as a mild preventive or in rotation with stronger treatments.