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Best Fungicide For Crepe Myrtle (2024 Updated)

If you’re looking for a way to keep your crepe myrtle healthy and looking beautiful, then you might want to consider fungicide. Fungicide is a type of pesticide that is designed to target and eliminate fungal diseases, which are a common problem for crepe myrtle trees. However, before you rush out to buy a fungicide, there are some important factors to consider.

Firstly, you need to be aware of the type of fungus that is affecting your crepe myrtle. Not all fungicides are created equal, and different fungal infections may require different types of treatment. Secondly, consider the severity of the infection – if it’s just a minor issue, then a lower strength fungicide may be suitable. However, if the fungus has spread extensively, or if it’s a particularly aggressive strain, you may need something more potent.

One of the most common fungal infections that affect crepe myrtle is powdery mildew. This can cause unsightly white patches on the leaves and can eventually lead to leaf drop. Some types of fungicide are specifically designed to tackle powdery mildew, so be sure to check the product label before you buy.

Are you tired of struggling to keep your crepe myrtle healthy? Do you want to avoid unsightly fungal infections? If you answered yes to either of these questions, then you might want to consider using a fungicide. But before you do, make sure you consider the factors above to ensure you choose the right product for your needs.

10 Best Fungicide For Crepe Myrtle

# Product Image Product Name Product Notes Check Price
1
Ideal for controlling fungal diseases on fruits, vegetables, ornamental plants, and trees.
2
This product is ideal for controlling and treating powdery mildew, fungus, and other plant-related fungal issues both indoors and outdoors.
3
It is ideal for controlling common diseases in organic gardening.
4
This product is ideal for protecting and feeding trees and shrubs for a period of 12 months.
5
The product is ideal for fertilizing crepe myrtle trees with a balanced formula of nutrients.
6
Ideal for controlling and preventing diseases in roses, flowers, and shrubs.
7
This product is ideal for controlling fungus in lawns, ornamentals, greenhouses, and nurseries.
8
Ideal for eliminating white grubs, sod webworms, and Japanese beetle larvae in lawns. Provides season-long grub control for up to 10,000 sq. ft.
9
It is an ideal natural solution to combat pests, mold, and mildew on plants without harming the environment.
10
This product is ideal for controlling insects, diseases, and mites on lawns and gardens.
Ideal for controlling fungal diseases on fruits, vegetables, ornamental plants, and trees.
This product is ideal for controlling and treating powdery mildew, fungus, and other plant-related fungal issues both indoors and outdoors.
It is ideal for controlling common diseases in organic gardening.
This product is ideal for protecting and feeding trees and shrubs for a period of 12 months.
The product is ideal for fertilizing crepe myrtle trees with a balanced formula of nutrients.
Ideal for controlling and preventing diseases in roses, flowers, and shrubs.
This product is ideal for controlling fungus in lawns, ornamentals, greenhouses, and nurseries.
Ideal for eliminating white grubs, sod webworms, and Japanese beetle larvae in lawns. Provides season-long grub control for up to 10,000 sq. ft.
It is an ideal natural solution to combat pests, mold, and mildew on plants without harming the environment.
This product is ideal for controlling insects, diseases, and mites on lawns and gardens.

1. Bonide 811 Copper 4e Fungicide 16oz (473ml)

Captain Jack's Liquid Copper Fungicide Concentrate is a highly effective solution to control and prevent a wide range of plant diseases in your garden. This fungicide is approved for organic gardening and is suitable for the production of organic produce. It can even be used up until the day of harvest, making it a safe and reliable choice for your garden.

This copper fungicide is effective in the prevention and control of common garden diseases such as blight, black spot, powdery mildew, peach leaf curl, and more. It can be applied to fruits, vegetables, ornamentals, and other plants in your lawn and garden for complete and long-lasting disease control.

This product arrives ready-to-mix, making it easy to use. Simply mix with water according to package directions and apply thoroughly to the affected plants. For full use instructions, please see the product label.

Pros

  • Approved for organic gardening and suitable for the production of organic produce
  • Can be used up until the day of harvest
  • Effective in controlling and preventing a wide range of plant diseases
  • Can be applied to fruits, vegetables, ornamentals, and other plants
  • Conveniently arrives ready-to-mix

2. Fungicide Ally: Ultimate Plant Protection

Enhance the growth of your plants with the natural fungicide and bactericide spray from Grower’s Ally. This product is specially formulated to kill and prevent common plant pathogens such as powdery mildew, making your plants healthier and more productive. Its broad-spectrum citric acid fungicide is an effective natural disinfectant that reduces bacterial growth and is gentle on plant tissue. When used as a preventative treatment, it forms a protective barrier on the surface of the leaves to inhibit pathogen development. This plant disease control spray is suitable for use in all grow environments and cultivation facilities such as indoor, outdoor, greenhouse, and hydroponic setups. Trusted by large-scale growers, this foliar spray is recommended by cultivators for its effectiveness and reliability. Plus, it can be safely applied through all stages of plant growth, from clones through the flowering cycle when many problems occur.

Grower's Ally Fungicide spray is an excellent product for those who are into organic gardening. It is FIFRA 25(b) exempt and OMRI Listed, which means it is free from residual solvents, synthetic pesticides, and heavy metals. It is formulated with food-grade citric acid, making it safe for the environment and your plants. With this product, you can maximize your yields without worrying about harming the environment.

To sum it up, Grower’s Ally Fungicide spray is a must-have for any gardener who wants to keep their plants healthy and disease-free. With its natural formula, it is safe for your plants, the environment, and you. Say goodbye to plant diseases and say hello to healthier, more productive plants with Grower's Ally Fungicide spray.

Pros

  • Formulated with food-grade citric acid, making it safe for the environment and your plants
  • FIFRA 25(b) exempt and OMRI Listed, which means it is free from residual solvents, synthetic pesticides, and heavy metals
  • Can be safely applied through all stages of plant growth, from clones through the flowering cycle when many problems occur
  • Trusted by large scale growers and suitable for use in all grow environments and cultivation facilities: indoor, outdoor, greenhouse, hydroponic
  • Effective natural disinfectant that reduces bacterial growth and is gentle on plant tissue

3. Organic Fungicide Spray – Captain Jack's!

Protect your garden from harmful plant diseases with Captain Jack's ready-to-use Liquid Copper Fungicide. This organic fungicide is suitable for use in the production of organic produce and can even be applied up to the day of harvest, making it a reliable solution for gardeners who want to keep their crops healthy and safe.

Captain Jack's Liquid Copper Fungicide is effective in preventing and controlling a wide range of plant diseases, including blight, black spot, powdery mildew, and peach leaf curl. It can be used on fruits, vegetables, ornamentals, and other plants in your lawn and garden to ensure complete and long-lasting disease control.

This product comes in a convenient trigger spray bottle, ready to use. To apply, simply shake the bottle well and thoroughly spray the affected plants and foliage. For detailed usage instructions, please refer to the product label.

Pros

  • Suitable for organic gardening and production of organic produce
  • Effective in preventing and controlling a wide range of plant diseases
  • Can be applied up to the day of harvest
  • Convenient and easy-to-use trigger spray bottle

4. Bioadvanced 12 Month Tree And Shrub Protect And Feed, Granules, 10 Lb

Protect your trees and shrubs from insects and pests with this 12-month protection insect and pest killer. With just one application, this product can kill Japanese Beetles, Emerald Ash Borers, Adelgids, Leafminers, Aphids, and more, while also preventing new infestations for up to a year. This product is not only an insect and pest killer, but it also acts as a slow-release fertilizer, improving the health of your plants. This systemic protection is applied to the roots of your potted and outdoor trees and shrubs, providing complete protection to every part of the plant.

Please note that this product is not for sale in CT, MD, MA, ME & VT, as well as Nassau, Suffolk, Kings, and Queens counties of NY.

Pros

  • Effective insect and pest killer
  • Provides 12-month protection from new infestations
  • Acts as a slow-release fertilizer to improve plant health
  • Systemic protection from roots to leaves

Cons

  • – Not available for sale in CT, MD, MA, ME & VT, as well as Nassau, Suffolk, Kings, and Queens counties of NY

5. Bioadvanced Disease Control For Roses, Flowers And Shrubs, Concentrate, 32 Oz

The Systemic Formula is a highly effective solution that can cure and prevent various diseases in your roses, flowers, shrubs, and houseplants. This formula provides an all-encompassing solution that can keep your plants healthy and disease-free.

This formula contains a fungicide that can effectively control diseases like Black Spot, Powdery Mildew, Crabapple Scab, Boxwood Blight, and many more. It ensures that your plants stay protected from harmful diseases that can hinder their growth and development.

The Systemic Formula offers rainproof protection that can last up to 2 weeks, making it an excellent solution for areas that receive frequent rainfall. This feature ensures that your plants remain protected even during heavy rain spells.

This formula is easy to use and can make up to 42 gallons of spray, making it perfect for large gardens and landscapes. It offers excellent coverage and can effectively protect all your plants from diseases.

Please note that this product is not for sale in NY due to restrictions.

Pros

  • Highly effective solution that can cure and prevent various plant diseases
  • Contains a fungicide that can control diseases like Black Spot, Powdery Mildew, Crabapple Scab, Boxwood Blight, and more
  • Offers rainproof protection that can last up to 2 weeks
  • Easy to use and can make up to 42 gallons of spray, making it perfect for large gardens and landscapes

Cons

  • – Not available for sale in NY due to restrictions

6. Atticus Stergo: Max Strength Fungus Control

Stergo MX is a highly effective fungicide that provides superior disease protection for plants. It contains 22% mefenoxam, which is the same active ingredient found in Subdue Maxx, the preferred fungicide of professional turf managers and greenhouse growers. With contact and systemic activity, Stergo MX provides a double-action disease attack that not only stops existing diseases but also prevents new diseases from developing. It is absorbed through the leaves and roots of plants, and fights diseases from within while simultaneously holding power on the soil surface to combat pathogens in the organic matter.

This broad-spectrum fungicide is ideal for controlling Pythium blight and Pythium damping-off in turf and ornamentals, as well as many other root, stem, and foliar diseases. The product is labeled for use on flowering, foliage, and woody ornamentals, vegetable transplants, and turfgrass, making it a versatile choice for a variety of settings. Stergo MX is suitable for use in greenhouse, golf, commercial, and residential settings. It is important to note that Stergo MX is not available for sale in Alaska, Hawaii, Nebraska, Oregon, Wisconsin, or Wyoming, and it is essential to read and follow label instructions before use.

Pros

  • Contains 22% mefenoxam, the same active ingredient as Subdue Maxx for unparalleled disease control
  • Provides double-action disease attack with contact and systemic activity
  • Absorbed through leaves and roots to fight diseases from within while holding power on the soil surface to combat pathogens in organic matter
  • Suitable for controlling Pythium blight and Pythium damping-off in turf and ornamentals, as well as many other root, stem, and foliar diseases
  • Versatile product labeled for use on flowering, foliage, and woody ornamentals, vegetable transplants, and turfgrass
  • Suitable for use in greenhouse, golf, commercial, and residential settings

Cons

  • – Not available for sale in Alaska, Hawaii, Nebraska, Oregon, Wisconsin, or Wyoming

7. Grubelim – Season-Long Lawn Grub Control Solution.

Looking for a perfect solution to control grubs and armyworms? Scotts GrubEx1 can help you out. This product is designed to be applied in the spring or early summer to effectively kill and prevent grubs and armyworms for up to 4 months. It is specially formulated to prevent root damage caused by insects, which results in a stronger and healthier lawn. The product also helps to prevent turf damage by killing grubs when they are young. What's more, Scotts GrubEx1 kills 25 percent more types of grubs than the original GrubEx, making it a more effective and reliable solution for your lawn care needs. It is compatible with Scotts spreaders, ensuring an even and accurate application every time. So, get ready to enjoy a lush and healthy lawn with Scotts GrubEx1!

Scotts GrubEx1 is a powerful product that offers several benefits for your lawn care. It effectively kills and prevents grubs and armyworms for up to 4 months, which means you can enjoy a pest-free lawn for longer. The product also helps to prevent root damage caused by insects, which results in a stronger and healthier lawn. It kills grubs when they are young, preventing turf damage and ensuring a beautiful lawn. Scotts GrubEx1 is also more effective than the original GrubEx, killing 25 percent more types of grubs. It is designed to work with Scotts spreaders, ensuring a precise and even application every time.

Scotts GrubEx1 is your lawn's best friend when it comes to controlling grubs and armyworms. This product is easy to apply and offers several benefits. It effectively kills and prevents grubs and armyworms for up to 4 months, which means you can enjoy a pest-free and healthy lawn for longer. The product also helps to prevent root damage caused by insects, resulting in a stronger and healthier lawn. It kills grubs when they are young, which prevents turf damage and ensures a beautiful lawn. Scotts GrubEx1 is more effective than the original GrubEx, killing 25 percent more types of grubs. It is compatible with Scotts spreaders, ensuring an even and accurate application every time. With Scotts GrubEx1, you can achieve a lush, green, and healthy lawn with ease!

Pros

  • Effectively kills and prevents grubs and armyworms for up to 4 months
  • Prevents root damage caused by insects for a stronger and healthier lawn
  • Kills grubs when they are young, preventing turf damage and ensuring a beautiful lawn
  • Scotts GrubEx1 is more effective than the original GrubEx, killing 25 percent more types of grubs
  • Compatible with Scotts spreaders, ensuring an even and accurate application every time

8. Plant Defender: Natural Maximum Strength Pesticide Spray

Trifecta Crop Control Ready To Use is a powerful spray that can help protect and cure Powdery Mildew, Spider Mites, Russet Mites, Broad Mites, Botrytis, Grey Mold, Aphids, fungal and parasitic species on plants. The product is made with a unique blend of food-grade premium essential oils including garlic, thyme, clove, and peppermint oil that is broken down into nano-size particles for maximum coverage. The ready-to-use formula is diluted at maximum strength 2oz per gallon ratio, which means there is no need for mixing. Simply point and spray and thoroughly wet the plants until foliage is dripping including the underside of the leaves and the surface of the growing medium.

Crop Control is safe for use on most plants, including fruits, vegetables, herbs, spices, roses, flowers, trees, shrubs, houseplants, succulents, ornamentals and more. It is a quick and easy solution to mildew, mold, and fungus. Before applying the spray, it is recommended to test spray a few leaves before full application to ensure compatibility with the plant.

Trifecta Crop Control is made with natural food-grade ingredients, making it an excellent choice for natural growers. The product is farmer recommended, and thousands of growers have already benefitted from it. With your Trifecta Crop Control purchase, you are protected by Amazon's money-back guarantee, so you can order now with confidence.

Pros

  • Powerful spray that can help protect and cure various plant diseases
  • Made with a unique blend of food-grade premium essential oils
  • No need for mixing, ready-to-use formula
  • Safe for use on most plants
  • Quick and easy solution to mildew, mold, and fungus
  • Made with natural food-grade ingredients
  • Farmer recommended
  • Protected by Amazon's money-back guarantee

9. Bioadvanced 3-In-1 Insect, Disease And Mite Control, Ready-To-Spray, 32 Oz

This 3-in-1 formula is a powerful insect, disease, and mite control solution that is perfect for use on roses, flowers, shrubs, and trees. It provides a comprehensive approach to plant care by addressing multiple issues in one easy-to-use product.

This insect killer is highly effective against a wide range of pests, including army worms, aphids, spider mites, Japanese beetles, and caterpillars. It uses a potent formula to eliminate these pests and protect your plants from further damage.

In addition to its insect-killing properties, this product also provides excellent disease control. Its fungicide properties are highly effective against blackspots, powdery mildew, and other common plant diseases. This makes it an ideal solution for maintaining the health and appearance of your plants.

One of the key benefits of this product is its rainproof protection. Its systemic formula provides long-lasting protection that lasts up to 30 days, even in wet conditions. This ensures that your plants remain protected from pests and diseases even in adverse weather conditions.

This product comes with an easy hose-attachment applicator that makes it simple to apply. It can treat up to 190 rose bushes, making it a cost-effective solution for large gardens.

Please note that this product is not available for sale in NY, CT, MD, MA, ME, & VT due to restrictions.

Pros

  • 3-in-1 formula for comprehensive plant care
  • Effective insect killer against a wide range of pests
  • Excellent disease control with potent fungicide properties
  • Rainproof protection that lasts up to 30 days
  • Easy hose-attachment applicator for quick and simple application
  • Cost-effective solution for large gardens

Cons

  • – Not available for sale in NY, CT, MD, MA, ME, & VT due to restrictions

Best Fungicide For Crepe Myrtle FAQs

Are there any natural alternatives to fungicides for crepe myrtle?

Yes, there are natural alternatives to fungicides for crepe myrtle. Crepe myrtle is a beautiful and popular flowering tree that is susceptible to fungal diseases like powdery mildew and black spot. Fungicides are often used to control these diseases, but they can have negative effects on the environment and human health.

One natural alternative to fungicides is to maintain good tree health through proper cultural practices. This includes avoiding over-watering, improving air circulation around the tree, and pruning dead or diseased branches. Another alternative is to use organic fungicides made from natural ingredients like neem oil, copper sulfate, and baking soda. These products are effective against fungal diseases and are safer for the environment and human health.

It is also important to choose disease-resistant varieties of crepe myrtle when planting new trees. Varieties like Natchez, Muskogee, and Tuscarora have shown resistance to powdery mildew and other common fungal diseases.

Overall, by implementing natural alternatives and proper cultural practices, it is possible to control fungal diseases in crepe myrtle trees without resorting to harmful chemicals.

Can I prevent fungal diseases in my crepe myrtle without using fungicides?

Yes, it is possible to prevent fungal diseases in crepe myrtles without using fungicides. Crepe myrtles are susceptible to a variety of fungal diseases, including powdery mildew, leaf spot, and sooty mold. To prevent these diseases, it is important to maintain good cultural practices, such as proper watering and fertilization. Crepe myrtles should be watered deeply and infrequently to promote deep root growth and prevent excess moisture around the roots, which can encourage fungal growth. Fertilization should be done in moderation, as excessive fertilization can weaken the plant and make it more susceptible to disease. It is also important to prune crepe myrtles properly to promote good air circulation and prevent overcrowding, which can create a humid environment that is ideal for fungal growth. Regularly removing diseased leaves and branches can also help prevent the spread of fungal diseases. In summary, while fungicides can be effective in preventing fungal diseases in crepe myrtles, good cultural practices can go a long way in maintaining a healthy and disease-resistant plant.

How often should I apply fungicide to my crepe myrtle?

The frequency of applying fungicide to crepe myrtle depends on various factors. Fungus thrives in wet and humid conditions, so if your region experiences frequent rainfall or high humidity levels, you may need to apply fungicide more often. Additionally, if your crepe myrtle has a history of fungal infections, it is advisable to use fungicide preventively. The type of fungicide you use and its strength also affects the frequency of application. Some fungicides require more frequent applications than others.

Experts recommend applying fungicide every two to four weeks during the growing season. However, you should always follow the manufacturer's instructions on the label for the specific fungicide you are using. Overuse of fungicide can lead to the development of resistant strains of fungus, which can be difficult to control. It is also essential to maintain good cultural practices, such as pruning and removing infected plant debris, to prevent the spread of fungus. With proper care and attention, your crepe myrtle can remain healthy and free from fungal infections.

What are the signs that my crepe myrtle needs a fungicide treatment?

Crepe myrtles are popular flowering trees that are known for their long-lasting blooms and easy maintenance. However, these trees are also prone to fungal diseases that can affect their health and appearance. If you notice any of the following signs, it may be time to consider a fungicide treatment for your crepe myrtle:

1. Discolored or distorted leaves: Fungal infections can cause leaves to turn yellow, brown, or black, or become distorted and misshapen. If you notice any unusual discoloration or deformation in your crepe myrtle's leaves, it may be a sign of a fungal disease.

2. Powdery mildew: One of the most common fungal diseases that affect crepe myrtles is powdery mildew, which appears as a white, powdery coating on the leaves, stems, and flowers of the tree.

3. Black spot: Another common fungal disease is black spot, which causes black spots to appear on the leaves and can cause them to drop prematurely.

4. Stunted growth: Fungal infections can also stunt the growth of your crepe myrtle, making it smaller and weaker than it should be.

If you notice any of these signs, it's important to act quickly to prevent the fungal disease from spreading and causing further damage to your tree. A fungicide treatment may be necessary to protect your crepe myrtle and keep it healthy and beautiful.

What is the best fungicide for crepe myrtle?

When it comes to selecting the best fungicide for crepe myrtle, there are several options available in the market. However, choosing the right one depends on the type of fungus affecting the plant. One of the most common diseases affecting crepe myrtles is powdery mildew, which can be controlled with fungicides containing potassium bicarbonate or neem oil. Another common disease is Cercospora leaf spot, which can be controlled with copper-based fungicides or systemic fungicides containing propiconazole or myclobutanil. It is important to select a fungicide that is labeled for use on crepe myrtles and follow the instructions carefully to avoid damage to the plant or harm to the environment. In addition to using fungicides, proper pruning, watering, and fertilization practices can also help prevent fungal infections in crepe myrtles. Regular inspection and maintenance of the plant can go a long way in keeping it healthy and beautiful.

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