Does your beautiful green lawn suddenly show frustrating brown or yellow patches? You are not alone! Lawn fungus can turn a dream yard into a patchy nightmare almost overnight. Dealing with these unwelcome spots often feels like a guessing game. You see the problem, but which liquid fungicide will actually solve it without harming your grass?
Choosing the right liquid fungicide for lawns feels overwhelming because there are so many products. Some work on certain diseases, while others fail completely. You want fast results, but you also need something safe for your pets and kids. Wasting time and money on the wrong spray is a common lawn owner’s pain point.
This guide cuts through the confusion. We will break down exactly what you need to look for in a liquid fungicide. You will learn to match the product to the specific disease plaguing your turf. By the end, you will confidently select the best treatment for a lush, healthy lawn.
Top Liquid Fungicide For Lawns Recommendations
- FUNGICIDE: Fungus Control for lawns cures and prevents listed lawn diseases
- 30 DAY PROTECTION: Protects against lawn diseases for up to a month
- DISEASE CONTROL: Fungicide controls Red Threat, Brown Patch, Dollar Spot, Rust, and other listed diseases
- RAINPROOF PROTECTION: Systemic Fungicide is absorbed by grass and will not wash off
- Can be used on all lawn types
- FUNGUS CONTROL WITH LASTING FIGHTING POWER: Gravex 20 EW Fungicide contains 19.7% myclobutanil; the same active ingredient as Eagle 20EW specialty fungicide, a trustworthy partner for broad-spectrum fungus takedown.
- CURE + PREVENT: Gravex 20 EW works double duty to deliver proven fungus control. With both curative and preventive properties, Gravex strikes out invading fungus and halts future development.
- DOLLAR SPOT CONTROL IS JUST THE BEGINNING: Gravex 20 EW delivers powerful control to more than 38 troublesome plant fungi. Some of the many include anthracnose, spring dead spot, brown patch, red thread, and rusts in turfgrass as well as powdery mildew, scab, and black spot in ornamentals. See the product label for complete control spectrum.
- FROM LAWN TO LANDSCAPE, GOLF TO GREENHOUSE – WE HAVE YOU COVERED: Approved for multiple use sites and many plant species, Gravex 20 EW is ready to tackle fungus wherever the need. Gravex may be used on common turf species, more than 100 ornamental plants, and residential fruit trees. Refer to the product label for a complete list of tolerant species and application directions.
- PROTECTION THAT GROWS: Don’t let plants outgrow your fungus control treatment. Gravex 20 EW utilizes upward systemic mobility to catch and protect tender new vegetation as it grows. This lasting inside-out approach delivers protection for up to 28 days.
- DUAL-ACTION FORMULA: Controls major lawn diseases and fungus, plus kills listed lawn-damaging insects on contact
- RAINPROOF: Rainproof in hours – can’t be washed off by rain
- PREVENTS DISEASE: Start treating when grass begins to green up in the spring; for best results, treat every two weeks
- QUICKFLIP HOSE-END SPRAYER: Attaches easily to your garden hose and activates at the flip of a switch
- Use Scotts DiseaseEx Lawn Fungicide on home lawns to prevent disease before it appears and control disease at the first sign of symptoms
- Controls 26 listed lawn diseases, including brown patch, stem & stripe rust, red thread, powdery mildew, necrotic ring spot, and pink patch
- This fungicide for lawns starts working within 24 hours of application, and continues to control diseases up to 4 weeks
- For best results, begin applications of this lawn care treatment prior to disease symptoms, or when conditions are favorable for disease
- One 10 lb. bag of Scotts DiseaseEx Lawn Fungicide 10 lb. bag treats up to 5,000 sq. ft.
- PROVEN BROAD-SPECTRUM FUNGUS PREVENTION: Gunner 14.3 MEC contains 14.3% propiconazole; the same active ingredient as Banner Maxx, the fungicide golf, landscape, and nursery pros trust for proven protection against more than 20 plant fungi.
- AN ADVANCED FORMULA FOR EASY MIXING: The MEC in Gunner 14.3 MEC makes a difference. MEC, or microemulsion concentrate, formulations are made with extremely small particles resulting in mixing ease and greater product stability. Once mixed in the sprayer, Gunner 14.3 MEC won’t separate and settle meaning you won’t have to mix again and again. Our MEC formulation is also tank-mix compatible with many other fungicides making it easy to customize your best-fit fungus control solution.
- PREDICTABLE CONTROL EVEN WHEN THE WEATHER ISN’T: When unpredictable weather strikes, Gunner 14.3 MEC delivers control you can count on. Once sprays have dried, it is resistant to washing away with rain or irrigation – keeping your foliar treatment right where you need it, on the foliage. When treating for soil-borne fungus, we suggest watering in after application. Refer to the product label for complete application directions.
- CONTROL YOU SEE, NOT SMELL: Some fungus control products leave unwanted scents behind. Gunner 14.3 MEC mixes into a low-odor solution so results are all you’ll notice after application.
- FAST-ACTING AND LONG-LASTING: Gunner 14.3 MEC enters the plant quickly via root uptake or stem absorption to deliver fast fungus protection that lasts up to 28 days. Find application instructions and intervals per target fungus in the product label.
- PROVEN BROAD-SPECTRUM FUNGUS PREVENTION: Gunner 14.3 MEC contains 14.3% propiconazole; the same active ingredient as Banner Maxx, the fungicide golf, landscape, and nursery pros trust for proven protection against more than 20 plant fungi.
- AN ADVANCED FORMULA FOR EASY MIXING: The MEC in Gunner 14.3 MEC makes a difference. MEC, or microemulsion concentrate, formulations are made with extremely small particles resulting in mixing ease and greater product stability. Once mixed in the sprayer, Gunner 14.3 MEC won’t separate and settle meaning you won’t have to mix again and again. Our MEC formulation is also tank-mix compatible with many other fungicides making it easy to customize your best-fit fungus control solution.
- PREDICTABLE CONTROL EVEN WHEN THE WEATHER ISN’T: When unpredictable weather strikes, Gunner 14.3 MEC delivers control you can count on. Once sprays have dried, it is resistant to washing away with rain or irrigation – keeping your foliar treatment right where you need it, on the foliage. When treating for soil-borne fungus, we suggest watering in after application. Refer to the product label for complete application directions.
- CONTROL YOU SEE, NOT SMELL: Some fungus control products leave unwanted scents behind. Gunner 14.3 MEC mixes into a low-odor solution so results are all you’ll notice after application.
- FAST-ACTING AND LONG-LASTING: Gunner 14.3 MEC enters the plant quickly via root uptake or stem absorption to deliver fast fungus protection that lasts up to 28 days. Find application instructions and intervals per target fungus in the product label.
- Controls diseases caused by bacteria & fungi
- New formulation works well with hose end sprayers
- Labeled for control of moss and algae
- Power source type: Manual
- For control of disease on vegetables, ornamentals, Fruit and nut crops & algae in turfgrass
The Complete Guide to Buying Liquid Lawn Fungicide
Lawn diseases can turn your beautiful green carpet brown quickly. Liquid fungicides offer a fast and effective way to stop these problems. This guide helps you choose the best product for your yard.
Key Features to Look For
When shopping, look for several important features. These details tell you how well the fungicide will work.
1. Broad-Spectrum vs. Targeted Action
- Broad-Spectrum: These attack many different types of fungi. They are great if you are unsure exactly what is causing the spots.
- Targeted: These work best against one or two specific diseases, like Dollar Spot or Brown Patch. They are often stronger for known issues.
2. Systemic vs. Contact Action
- Systemic Fungicides: These liquids get absorbed by the grass roots and leaves. They move through the plant to fight the fungus inside. They offer longer protection.
- Contact Fungicides: These sit on the surface of the grass blades. They stop the fungus when it lands on the treated area. They work fast but wear off quicker.
3. Duration of Control
Check how long the product protects your lawn. Some offer protection for only two weeks, while others last for a month or more. Longer protection means fewer trips to the sprayer.
Important Materials and Ingredients
The active ingredients are the real powerhouse of the fungicide. You must know what they are.
Common Active Ingredients
- Triazoles (like Propiconazole): These are systemic and good for long-term control of many diseases.
- Strobilurins (like Azoxystrobin): These offer excellent disease prevention and often improve the grass color.
- Dicarboximides: These often work well against patch diseases.
Tip: Always check the label to make sure the active ingredient is approved for use on your type of grass (like Fescue, Bermuda, or Zoysia).
Factors That Improve or Reduce Quality
Not all liquid fungicides perform the same way. Quality depends on how they are made and how you use them.
Factors That Improve Quality
- Concentration: Higher concentrations usually mean you need less product for a large area, which can be cost-effective.
- Surfactants (Stickers): High-quality liquids often include “stickers” that help the chemical stay on the grass blades, especially after rain or heavy watering.
- Ease of Mixing: Good products mix easily with water in your sprayer without clumping or leaving residue.
Factors That Reduce Quality
- Old or Expired Stock: Fungicides lose effectiveness over time. Buy from reputable sellers who move inventory quickly.
- Improper Storage: If the liquid froze or got extremely hot, the chemical structure might break down, making it useless.
User Experience and Use Cases
How easy is the product to use? This greatly impacts your overall satisfaction.
Application and Safety
Most liquid fungicides require dilution. You mix the concentrate with water in a pump sprayer. Proper safety gear is essential. Always wear gloves and eye protection. Do not apply when rain is expected within 24 hours unless the label says otherwise.
When to Apply
- Curative Use: If you already see brown spots, apply the fungicide immediately to stop the spread.
- Preventative Use: Apply the fungicide before conditions become perfect for the disease (usually when temperatures and humidity are high). This stops the problem before it starts.
A good user experience means clear mixing instructions and an easy-to-measure container.
10 Frequently Asked Questions (FAQ) About Liquid Lawn Fungicides
Q: How quickly does liquid fungicide start working?
A: Contact fungicides often work within hours on the surface. Systemic fungicides take longer, sometimes 24 to 48 hours, because the grass needs time to absorb the chemical fully.
Q: Can I mix fungicide with fertilizer?
A: Sometimes you can, but you must check the label first. Mixing chemicals that are not compatible can harm your lawn or make both products less effective.
Q: How long should I wait before mowing after applying fungicide?
A: Most labels recommend waiting at least 24 hours before mowing. This ensures the product has time to soak in properly.
Q: Is liquid fungicide safer than granular fertilizer?
A: Both are safe when used correctly. Liquid products generally cover the leaf surface more evenly, which can sometimes lead to more precise application.
Q: What is the best time of day to spray?
A: Apply early in the morning after the dew has dried, but before the heat of the day. This reduces the chance of the spray evaporating too quickly.
Q: Will rain wash the fungicide away?
A: If the product is systemic or has good “rainfastness,” a light rain after a few hours is fine. Heavy rain immediately after application might wash away surface treatments.
Q: Do I need a special sprayer for liquid fungicide?
A: No. A standard backpack or handheld pump sprayer works well. Make sure you clean the sprayer thoroughly afterward, especially if you also use it for herbicides (weed killers).
Q: How often should I reapply for prevention?
A: For prevention, reapplication schedules vary widely. Check your product label, but usually, you reapply every 3 to 4 weeks during peak disease season.
Q: What happens if I use too much fungicide?
A: Over-applying can cause chemical burn, which looks like yellow or brown patches on the grass. Always measure precisely according to the label directions.
Q: Can liquid fungicide harm my pets?
A: Yes, if they walk on the wet grass immediately after treatment. Keep pets and children off the lawn until the spray has completely dried, usually 2 to 4 hours.