10 Best Fertilizer For Crepe Myrtles (2024 Update)

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Crepe myrtles are beautiful and colorful flowering trees that are commonly found in gardens and landscapes. To keep them healthy and vibrant, it is important to feed them with the right fertilizer. However, with so many options available in the market, it can be overwhelming to choose the best fertilizer for your crepe myrtles. In this article, we will discuss the key points to consider when looking for fertilizer for crepe myrtles.

Firstly, it is important to choose a fertilizer that is specifically formulated for crepe myrtles. These fertilizers contain the right balance of nutrients that are essential for the growth and development of crepe myrtles.

Secondly, consider the NPK ratio of the fertilizer. NPK stands for nitrogen, phosphorus, and potassium, which are the primary nutrients that plants need for healthy growth. Crepe myrtles require a balanced NPK ratio, with a slightly higher amount of phosphorus to promote flowering.

Thirdly, choose a slow-release fertilizer that will gradually release nutrients over time. This will ensure that the crepe myrtles receive a steady supply of nutrients without the risk of over-fertilization.

Fourthly, consider using organic fertilizers that are made from natural sources such as compost or manure. Organic fertilizers are safe for the environment, and they also improve the soil quality.

Lastly, follow the instructions on the fertilizer package carefully, and apply the fertilizer at the right time and in the right amount. Over-fertilization can be harmful to crepe myrtles, so it is important to apply the fertilizer in moderation.

Overall, choosing the right fertilizer for your crepe myrtles is essential for their health and beauty. By considering these key points, you can make an informed decision and ensure that your crepe myrtles thrive.

10 Best Fertilizer For Crepe Myrtles

1. The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes (Box Of 6 Spikes – 1.5 Lbs)

The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes are a highly effective way to provide essential nutrients to trees, evergreens, and shrubs. These spikes are designed to offer fast-acting, long-lasting, and robust nutrition, ensuring that your plants receive the nourishment they need to thrive.

Each spike is 5 inches in length and packed with fertilizer. They are easy to hammer in, and no cap is required. The spikes are also highly durable and will not break, crush, or shatter, making them an excellent choice for any gardener who wants a reliable and hassle-free fertilization solution.

For best results, it is recommended to feed your plants once per season, in early spring and late fall. This will provide continuous fertilization and ensure that your trees and shrubs receive the nutrients they need throughout the year.

The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes contain natural ingredients, such as molasses, which release nutrition directly into the root zone. This helps promote stronger and healthier trees and shrubs, ensuring they can withstand the rigors of the environment and continue to grow and flourish.

The spikes feature a nutrient-rich 13-3-3 formula, with 13% nitrogen for plant growth and color, 3% phosphorus for healthy fruiting and blooms, and 3% potassium for strong roots. This well-balanced formula ensures that your plants receive all the necessary nutrients for optimal growth, health, and appearance.

In summary, The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes are a simple, effective, and convenient way to provide your plants with the nutrients they need to thrive. With a long-lasting, robust formula and easy-to-use design, these spikes are an excellent choice for any gardener looking to ensure the health and vitality of their trees and shrubs.

2. Jobe's 02610 Fertilizer Spikes Tree And Shrub, 160 Count, Brown

Jobe's 02610 Fertilizer Spikes Tree and Shrub is a pre-measured, time-release fertilizer that provides all trees and shrubs with continuous nourishment at the roots. With 160 count in each package, it is an easy-to-use solution for keeping trees and shrubs healthy and vibrant.

The fertilizer spikes are designed to be inserted easily around each tree's dripline, ensuring that the active roots are provided with a continuous supply of nutrients below the surface. This method of fertilizer application eliminates the wasteful runoff that commonly occurs with other types of fertilizers, resulting in a cleaner and more efficient fertilization process.

One of the key benefits of Jobe's 02610 Fertilizer Spikes is the slow-release formula that provides all-season feeding. This means that trees and shrubs will receive the necessary nutrients they need to thrive throughout the entire growing season. The spikes are recommended to be applied in early spring and late fall, which is when trees and shrubs are most in need of nutrients.

Using Jobe's fertilizer spikes is also a hassle-free solution that eliminates the mess, hazards, and smells associated with other types of fertilizers. The spikes are pre-measured, so there is no need to measure out the correct amount of fertilizer, and there is no need to worry about handling messy powders or liquids.

Overall, Jobe's 02610 Fertilizer Spikes Tree and Shrub is an easy and effective solution for keeping trees and shrubs healthy and vibrant. With its slow-release formula, easy-to-use design, and mess-free application, it is a convenient and efficient way to provide all-season nourishment to your plants.

3. Miracle-Gro Water Soluble All Purpose Plant Food, 3 Lb

Miracle-Gro Water Soluble All Purpose Plant Food is a highly effective product that helps plants grow bigger, healthier, and more beautiful. This 3 lb package is full of essential nutrients that are instantly absorbed by plants to promote growth and vitality. It is the perfect solution for anyone who wants to achieve lush and flourishing plants.

One of the greatest benefits of this product is that it is easy to use. Simply mix it with water and apply it to your plants every 1-2 weeks. Whether you use a Miracle-Gro Garden Feeder or a watering can, you can rest assured that your plants will receive all the nutrients they need to thrive.

This plant food is suitable for a wide variety of plants, including flowers, vegetables, trees, shrubs, and houseplants. It is an all-purpose solution that can be used on virtually any type of plant. It is designed to be safe for all plants, and when used as directed, it will not burn or harm them in any way.

The secret to the effectiveness of Miracle-Gro Water Soluble All Purpose Plant Food is the unique blend of essential nutrients that it contains. It is formulated with a balanced mix of nitrogen, phosphorus, and potassium, as well as other important micronutrients like iron, manganese, and zinc. Together, these nutrients work to promote healthy plant growth, strong root development, and vibrant blooms.

One of the key benefits of using this plant food is that it helps plants grow faster and healthier than those that are not fed. With regular use, plants will grow larger, stronger, and more resistant to pests and diseases. They will also produce more blooms and fruits, which is particularly important for vegetable gardens and flower beds.

Overall, Miracle-Gro Water Soluble All Purpose Plant Food is an excellent product for anyone who wants to achieve beautiful, healthy plants. It is easy to use, safe for all plants, and packed with essential nutrients that will help your plants thrive. Whether you are a seasoned gardener or a beginner, this plant food is a must-have for anyone who wants to achieve stunning, flourishing plants.

4. Bioadvanced Rose & Flower Fertilizer, Granules, 4 Lb

The BioAdvanced Rose & Flower Fertilizer is a top-notch plant fertilizer that promotes strong roots and enriches the soil. This granulated plant food is specially formulated with micro-nutrients to help your plants produce beautiful blooms.

One of the best things about this fertilizer is that it provides long-lasting, slow-release feeding that lasts up to 4 months. This means that you won't have to worry about constantly fertilizing your plants. Instead, you can sit back and enjoy the fruits of your labor as your plants thrive and bloom beautifully.

The BioAdvanced Rose & Flower Fertilizer is perfect for use on potted plants or in garden beds. Whether you're growing roses, petunias, or any other type of flowering plant, this fertilizer will help your plants grow strong and healthy.

It's important to note that this product is not for sale in California due to state regulations. If you're located in California, you may want to consider an alternative fertilizer that meets state requirements.

Overall, the BioAdvanced Rose & Flower Fertilizer is an excellent choice for anyone looking to give their plants the nutrients they need to thrive. With its special formula and long-lasting feeding, this fertilizer is sure to help your plants produce stunning blooms that will impress all who see them.

5. The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes (Box Of 24 Spikes – 6 Lbs) (Ofa-Fs1333-24)

The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes are a fast-acting and long-lasting solution for feeding trees, evergreens, and shrubs. Each box contains 24 spikes, weighing a total of 6 pounds, making it an excellent value for any homeowner looking to nourish their outdoor plants.

The TruSpikes measure 5 inches in length and are packed with fertilizer, making them easy to hammer into the ground without the need for a cap. Unlike other spikes, they will not break, crush, or shatter, ensuring that the nutrients are released effectively into the soil.

To achieve optimal results, it is recommended to feed the plants once per season, during the early spring and late fall, for continuous fertilization. This schedule ensures that the plants receive the necessary nutrients throughout the growing season, promoting healthy growth and development.

The fertilizer spikes contain natural ingredients, such as molasses, which release nutrition directly into the root zone. This helps to promote stronger trees and shrubs, providing them with the necessary energy to thrive in any environment.

The nutrient-rich formula contains 13% nitrogen, which is essential for plant growth and color. The 3% phosphorus is crucial for healthy fruiting and blooms, while the 3% potassium helps to strengthen the roots, ensuring that the plants are well anchored and can withstand harsh weather conditions.

Overall, The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes are an excellent investment for any homeowner who wants to maintain the health and beauty of their outdoor plants. With its easy-to-use design and long-lasting formula, it provides robust nutrition that will keep trees, evergreens, and shrubs thriving for years to come.

6. Biosafe Oxiphos Bactericide/fungicide 2.5 Gallon

BIOSAFE OxiPhos Bactericide/Fungicide 2.5 Gallon is a highly efficient product that helps fight against diseases caused by bacteria and fungi. The product is a combination of phosphorous acid and activated peroxide, which works together to provide a one-two punch against targeted organisms.

The activated peroxide in the product helps the phosphorous acid active ingredient to have a broader effect on targeted organisms. This combination of two active ingredients makes it easier to prevent and control diseases that may cause damage to plants.

One of the unique features of BIOSAFE OxiPhos Bactericide/Fungicide 2.5 Gallon is its systemic action. This means that the product can be absorbed by the plant and transported throughout its system, making it more effective in controlling and preventing diseases.

The product is designed to work on a wide range of crops, including vegetables, fruits, and ornamental plants. It is also effective in controlling and preventing diseases that may attack trees and shrubs.

BIOSAFE OxiPhos Bactericide/Fungicide 2.5 Gallon is easy to use and apply. The product can be applied through a variety of methods, including spray, irrigation, or soil drench. The recommended application rate is based on the severity of the disease and the size of the crop.

It is important to note that BIOSAFE OxiPhos Bactericide/Fungicide 2.5 Gallon is a non-returnable product. This means that once the product has been purchased, it cannot be returned.

In conclusion, BIOSAFE OxiPhos Bactericide/Fungicide 2.5 Gallon is an effective and reliable product that helps control and prevent diseases caused by bacteria and fungi. Its unique combination of two active ingredients and systemic action makes it easier to protect crops from diseases. The product is easy to use and apply and can be used on a wide range of crops. However, it is important to note that the product is non-returnable, so customers should ensure that they purchase the correct product for their needs.

7. Flower Fuel 1-34-32 – Bloom Booster And Yield Enhancer For Soil And Hydroponics – Super Concentrated P And K – Bigger, Heavier, Healthier Harvests – 250g

Flower Fuel is a premium quality bloom booster and yield enhancer designed for plants grown in soil and hydroponics. It is a super concentrated blend of essential nutrients, including high levels of phosphorus and potassium, that are crucial for promoting robust growth and bigger, heavier, and healthier harvests.

This 100% hydroponic-grade, soluble bloom fertilizer is compatible with all popular 2 and 3-part nutrients and can be used in any soil, coco, hydroponic, or aeroponic system. It is formulated to help achieve larger, denser, and heavier harvests, resulting in better looking and more valuable crops for growers.

Flower Fuel contains over 40 proprietary ingredients, including powerful nutrients, organic components, and every single trace element required for growing healthy plants. These ingredients work synergistically to promote optimal plant growth, flowering, and fruiting.

One of the most significant advantages of Flower Fuel is its exceptional value. A 250g jar of Flower Fuel can treat up to 200 gallons of water, making it an incredibly cost-effective solution at just 10 cents per gallon treated.

Overall, Flower Fuel is an excellent choice for growers who want to achieve bigger, heavier, and healthier harvests. Its unique blend of nutrients and organic components are designed to support optimal plant growth and development, and it is an exceptional value for the money. Whether you are growing in soil or hydroponics, Flower Fuel is a powerful tool to help you achieve your growing goals.

8. Southern Ag 10-10-10 All-Purpose Granular Organic Fertilizer For Vegetable Gardens, Flowerbeds, Roses, Large Shrubs And Fruit Trees. Includes Premium Centaurus Az Gloves. 5lb.

Southern Ag Fertilizer 10-10-10 is a premium quality all-purpose granular fertilizer that is designed to revive plants and trees, promote deep green grass, boost vegetable trees and shrubs, and grow Japanese maple trees and pumpkins. This organic fertilizer is a quick and proper solution to revitalize weak and droopy plants and give them a richer color.

The fertilizer contains 10% Nitrogen, 10% Phosphorus (P205), 10% Potassium (K20), plus minor elements, and its formulation is uniform and homogenous. This makes it an ideal choice for gardens, flowerbeds, roses, shrubs, and fruit trees. The fertilizer can cover just under an acre with a horizontal and vertical pattern, and grass will change to a nice dark green color, and seeds will also be growing fast.

For vegetable gardens and flowerbeds, the fertilizer can be used at a rate of 1 cup per 25 sq. ft. For roses and shrubs, use 2-2.5 cups per 4 ft. of height, and for fruit trees, use 2-4 cups per tree. To ensure safety while using the fertilizer, the package comes with premium quality Centaurus AZ hand safety gloves that protect the user from harmful effects.

If your plants exhibit weak stems or disclosed leaves, then Southern Ag Fertilizer 10-10-10 is the best choice to revive your dying plants. The fertilizer provides the necessary nutrients to stimulate growth and development, and it is suitable for all types of plants and trees. The deep green grass fertilizer promotes healthy growth of grass and seeds, and it can cover a large area with just one application.

For vegetable trees and shrubs, the fertilizer is the best choice to give a stunning look to your garden. It boosts growth and development, and it ensures that your plants and trees are healthy and strong. The granular formula is a quick and proper solution to revitalize your droopy or weakening Japanese maple tree and give it a richer color. It also stimulates new growth every season and proved fruitful to grow a big Atlantic giant pumpkin.

Overall, Southern Ag Fertilizer 10-10-10 is a must-have for any gardener or homeowner who wants to ensure the healthy growth of their plants and trees. It is an all-purpose, organic fertilizer that provides the necessary nutrients to promote growth and development, and it is suitable for all types of plants and trees. With the premium quality Centaurus AZ hand safety gloves included in the package, users can ensure their safety while using the fertilizer.

9. Mauget Imisol 4ml: Tree Injector For Insecticide And Fungicide With Imidacloprid And Debacarb.

Mauget Imisol 4ml is a unique micro-injection tree care treatment that combines both insecticide and fungicide in one application, making it an exclusive formulation developed and offered only by Mauget. This innovative product is designed to control diseases and insects with one easy-to-apply microinjection, saving time and expense for the user.

IMISOL is one of two Mauget products that are exclusively developed combination insect and disease microinjection tree care treatments. It combines Mauget's patented Fungisol (debacarb) Fungicide with Mauget's Imicide (Imidacloprid) Insecticide, providing a broad spectrum of disease and insect control for trees.

University and field tested, IMISOL offers a completely enclosed and minimal risk application method. The combination of Mauget's Fungisol plus Imicide offers disease suppression for over 30 tree disease pathogens and long-lasting control/suppression of over 37+ damaging insects, including many exotic introduced insects.

The microinjection method is a highly effective way to deliver the product into the tree, ensuring that the treatment reaches the target area quickly and effectively. The product is injected directly into the tree trunk, allowing it to travel through the sap stream and reach all parts of the tree, including the leaves and roots.

IMISOL is labeled for a broad spectrum of diseases and insects, making it a versatile and effective treatment for many different tree species. The product is easy to apply and requires minimal equipment, making it a cost-effective solution for tree care professionals and homeowners alike.

Overall, Mauget Imisol 4ml is a highly effective and unique micro-injection tree care treatment that offers both insect and disease control in one easy-to-apply application. With its broad spectrum of control and long-lasting effects, it is an excellent choice for anyone looking to protect their trees from damage and disease.

Best Fertilizer For Crepe Myrtles FAQs

Can I use organic fertilizer for my crepe myrtles?

Yes, organic fertilizer can be used for crepe myrtles. Organic fertilizer contains natural ingredients that are derived from plants, animals, or minerals, and it can provide your crepe myrtles with the necessary nutrients they need to grow healthy and strong. Organic fertilizers are also known to improve soil structure, increase soil fertility, and promote beneficial microbial activity in the soil.

When selecting an organic fertilizer for your crepe myrtles, choose one that is specifically formulated for trees and shrubs. Look for a fertilizer that has a balanced nutrient ratio, such as a 10-10-10 or 5-5-5 blend, and follow the recommended application rates on the package instructions. It's also important to apply the fertilizer at the right time, typically in early spring or late fall, to ensure optimal absorption by the plant roots.

Overall, using organic fertilizer for your crepe myrtles is a great way to promote healthy growth and support a thriving ecosystem in your garden.

How often should I apply fertilizer to my crepe myrtles?

As a general rule, crepe myrtles should be fertilized once a year, preferably in early spring before new growth appears. Use a slow-release, balanced fertilizer with an equal ratio of nitrogen, phosphorus, and potassium. Avoid using high-nitrogen fertilizers, as they can promote excessive leaf growth at the expense of flowers.

If your crepe myrtle appears weak or is struggling to grow, you may consider fertilizing it twice a year. The second application should occur in mid-summer after the first flush of blooms has faded.

It is important not to over-fertilize your crepe myrtle, as this can lead to excessive growth, weak branches, and susceptibility to diseases and pests. Always follow the manufacturer's instructions for application rates, and water the plant thoroughly after fertilizing to prevent burning the roots.

What are the signs that my crepe myrtles need fertilizer?

The signs that your crepe myrtles need fertilizer include slow growth, small leaves, and fewer flowers than usual. Additionally, if the leaves of your crepe myrtles are yellowing or the stems are brittle and break easily, it may indicate a nutrient deficiency. If you notice any of these signs, it is recommended that you fertilize your crepe myrtles with a balanced fertilizer that has a higher nitrogen content, which will promote healthy foliage and growth. It is best to fertilize in the spring or early summer before the plant begins its active growth phase. Be sure to follow the instructions on the fertilizer package and avoid over-fertilizing, as this can lead to excessive growth and weaker branches.

What type of fertilizer is best for crepe myrtles?

Nevertheless, answering the question, crepe myrtles require a balanced fertilizer with a higher amount of phosphorus and potassium, such as a 10-10-10 or 12-4-8 blend. Organic fertilizers with slow-release nitrogen are also recommended, as they provide a steady flow of nutrients over time. Additionally, incorporating compost or well-rotted manure into the soil can improve overall soil health and promote healthy growth. It's important to avoid over-fertilization, as this can lead to excessive growth and weaken the plant's structure. The best time to fertilize crepe myrtles is in the early spring before new growth appears and again in late summer or early fall after blooming has ceased. Following these guidelines will help ensure healthy, vigorous growth and beautiful blooms on your crepe myrtles.

When should I fertilize my crepe myrtles?

As a general rule, fertilize your crepe myrtles in late winter or early spring before new growth emerges. This will help provide the necessary nutrients for healthy growth and flowering throughout the growing season. It is also beneficial to fertilize again in mid-summer to encourage continued growth and blooming.

When selecting a fertilizer, choose one that is specifically formulated for flowering trees and shrubs. Look for a balanced blend of nitrogen, phosphorus, and potassium, along with micronutrients like iron and magnesium. Apply the fertilizer evenly around the base of the tree, being careful not to get any on the foliage or stems.

It is important not to over-fertilize, as this can lead to excessive growth and reduced flowering. Always follow the manufacturer's instructions and avoid applying fertilizer during periods of drought or extreme heat. With proper care and attention, your crepe myrtles will thrive and provide beautiful blooms for years to come.

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