Although roses are exquisite, they require a lot of care. If not, it’s easy to get a disease especially fungus diseases. For the latter, you have to invest in the best fungicide for roses. If you make the right decision, you can treat fungus and other problems on your roses, even prevent their growth in the future. However, applying a wrong product on your roses can cause a more serious problem.
After researching, below are the top list of the best fungicides for roses on the market. However, determine your needs and the conditions of your roses to pick the most suitable one.
Here are the best fungicides for roses you can buy in 2023:
- Best For Controlling Powdery Mildew: Bonide Captain Jack's Neem Oil
- Best For Controlling Black Spot: BioAdvanced 3-In-1 Control
- Fungicide & Bactericide Combo: Grower's Ally Fungicide
- Best For Quick Results: Spectracide Immunox Multi-Purpose Fungicide
- Best For Controlling Rust: Daconil Fungicide
- Best For Long-lasting Disease Control: Bonide Infuse Systemic Disease Control
|6 Best Fungicides For Roses|
Best For Controlling Powdery Mildew
|Bonide Captain Jack's Neem Oil|
Best For Controlling Black Spot
|BioAdvanced 3-In-1 Control|
Fungicide & Bactericide Combo
|Grower's Ally Fungicide|
Best For Quick Results
|Spectracide Immunox Multi-Purpose Fungicide|
Best For Controlling Rust
Best For Long-lasting Disease Control
|Bonide Infuse Systemic Disease Control|
Best For Controlling Powdery Mildew: Bonide Captain Jack's Neem Oil
- Easy to use
- Safe for citrus
- Garlic–like odor
According to the manufacturer, the Bonide Captain Jack’s Neem Oil is formulated for killing many species of attackers, but I strongly recommend it for controlling powdery mildew.
Many customers used this product to treat the latter, and it brings an incredible result quickly. For example, powdery mildew has gone away from their potted plants after applying 3 times. Besides, it is also effective to treat bugs, aphids, and spider mites.
|Bonide Captain Jack's Neem Oil Specifications|
32 Fluid Ounces
Fungicide, miticide, and insecticide combo
Although the Bonide Captain Jack's Neem Oil is formulated for killing many attackers, it works best on controlling powdery mildew.
Best For Controlling Black Spot: BioAdvanced 3-In-1 Control
- Highly effective to remove aphids
- A fair price
- Quick to work
- A strong odor
- Not safe on edible plants
Black spot is listed in the “PROTECTS AGAINST DISEASE'' and roses are listed in the “WHERE TO USE” of this product, so it is formulated for controlling black spot on roses, of course. However, this is not the only reason I put it here.
Customers said that the BioAdvanced 3-In-1 Control effectively minimizes black spots on their roses after some applications.
|BioAdvanced 3-In-1 Control Specifications|
24 Fluid Ounces
Kill and control product
Systemic rainproof protection
The effect of the BioAdvanced 3-In-1 Control on controlling black spots on roses is proven by customers.
Fungicide & Bactericide Combo: Grower's Ally Fungicide
- Easy to apply
- Hard to spray underside of the leaves because the bottle requires you to hold it upright perfectly
Are your roses attacked by both fungus and bacteria? If so, choose the 2-in-1 Grower’s Ally Fungicide that is a fungicide and bactericide combo, so it can treat both problems at the same time.
|Grower's Ally Fungicide Specifications|
8 Fluid Ounces
Citric Acid 1.07%
Kill and prevent
The Grower's Ally Fungicide can treat both of your roses’ problems (fungus and bacteria) at the same time.
Best For Quick Results: Spectracide Immunox Multi-Purpose Fungicide
- Simple to use
- Quick to work
- Terrible smell
Are your roses seriously attacked by fungus? In this case, you need a quick-to-work product that can save them as soon as possible. The Spectracide Immunox Multi-Purpose Fungicide minimizes the damage on your roses because it works effectively enough to give a quick result. Apart from working as described, many people said that this product can work fast.
|Spectracide Immunox Multi-Purpose Fungicide Specifications|
16 Fluid Ounces
The Spectracide Immunox Multi-Purpose Fungicide works quickly, so it suits roses that are in a serious case.
Best For Controlling Rust: Daconil Fungicide
- Fast to work
- Easy to spray
If you are looking for a fungicide that effectively controls rust on roses, here is it. The Daconil Fungicide is formulated to be used on flowers like roses for controlling rust and other diseases.
|Daconil Fungicide Specifications|
2 Fluid Ounces
Kills, stops, and prevents over 80 plant diseases
Among all products in this list, the Daconil Fungicide works the best for controlling rust.
Best For Long-lasting Disease Control: Bonide Infuse Systemic Disease Control
- Quick to kill powdery mildew
The Bonide Infuse Systemic Disease Control can give a long-lasting disease control because it not only kills present diseases but also prevents their growth on your roses in the future. Specifically, it can last for up to 4 weeks. You just need to reapply every 4-6 weeks. Customers also said that this product can prevent the recurrence of rust in the future.
|Bonide Infuse Systemic Disease Control Specifications|
16 Fluid Ounces
Stops and prevents
Long-lasting disease control
The Bonide Infuse Systemic Disease Control can control diseases for a long time, even prevent the growth of diseases in the future.
How To Choose The Best Fungicide For Roses?
What Is The Targeted Disease Of Your Roses?
After determining the disease your roses are facing, let’s check the information on the product label to check if the targeted disease of your roses is listed on it. This way is pretty easy for most customers because not everyone knows which ingredient works well for a specific problem.
However, to be sure, you can check the ingredients as well. For example, Sulphur, Protectant Mancozeb, Myclobutanil, and Penconazole are the active ingredients to treat black spots.
Should You Choose Curative Or Preventive Fungicide?
It depends on your needs. While curative fungicides can remove present fungal diseases, preventive fungicides will prevent the appearance of diseases.
Most fungicides work on the prevention aspect. After applying, the spray will form a barrier on your roses to prevent the germination of fungal spores. But, fungicides that are formulated for preventing diseases will do better than normal fungicides.
The earlier the disease diagnosis, the better the curative products work. Curative fungicides still bring excellent results with 1-2 days after infection. For longer infections, it’s hard to cure and remove disease spots and lesions completely, but many products are still effective enough to slow even stop the targeted disease. Depending on each specific case, choose an appropriate product because some fungicides have more curative properties than others.
Which Brands Make The Best Fungicide For Roses?
This leading brand has been famous since 1926. They provide their customers with high-quality products and solutions for lawn, home, and garden pest problems.
What is the best time to apply fungicide on roses?
If your roses have some spores in the winter, use a dormant spray, containing lime sulfur in January - after pruning for the first time of the season. After that, you can spray fungicide on your roses every 10 days from April to October. In case it’s in the rainy season, apply fungicide on roses every 5-7 days.
What time of day do you spray fungicide on roses?
The best time of day to spray fungicide on roses is early morning.
Note: don’t spray on windy days because the wind element can lose the control on coverage. You can even spray it onto yourself when the wind blows it in the opposite direction.
Does fungicide for roses work immediately?
Does rain wash away fungicides for roses?
If you use systemic fungicides, the plant tissues will absorb it, then redistribute it in the plant. Thus, it is less susceptible to be washed away by rain compared to protectant fungicides that just be applied on the outside of your plant.
One-inch of rain will wash off 50% of the protectant fungicide residue. Meanwhile, 2 inches of rain can remove the spray residue completely.
In case you choose sticky formulations that are applied with spreader-stickers, they can resist wash-off by rain.
Can you spray fungicide on roses too often?
No. How many times you spray fungicide on roses will depend on the climate in your area and how prevalent disease was in your roses in the previous season.
Why can’t your fungicide treat the problem on your roses? Perhaps you used it for the wrong purpose. Make sure that you know exactly what your roses are suffering to choose a suitable solution for the best effect. If not, you can make everything worse like spreading diseases.
Now, you know what you must consider to make the right decision. Just buy one and tell me about your experience of using the best fungicide for roses.