10 Best Fertilizers for Crape Myrtles in 2026

For healthy, vibrant crepe myrtles in 2026, choosing the best fertilizers for crape myrtles is essential. Opt for water-soluble plant foods, granular slow-release formulas, or liquid concentrates specifically tailored for blooms and root growth. These options provide the nutrients your plants need to thrive.

Look for balanced NPK ratios with added micronutrients to boost flowering and foliage. Fertilizer spikes offer easy, targeted feeding, making maintenance simple and effective. Organic or eco-friendly options are also available to protect the environment while nourishing your plants.

Whether you prefer quick absorption or steady nourishment, the right fertilizer depends on your plant’s needs and care routine. Explore top products and expert tips to find the best fit for your crepe myrtles in 2026.

Crepe Myrtle Water Soluble Plant Food 24oz

Give your Crepe Myrtles the targeted boost they need with Carl Pool’s Crepe Myrtle Water Soluble Plant Food 24oz. This fertilizer is designed to deliver nutrients quickly and efficiently, helping your plants grow stronger roots and vibrant leaves. Its water-soluble formula allows fast absorption through both roots and foliage, speeding up nutrient uptake and enhancing plant health.

The product’s specialized nutrient ratio of 8-55-7 is tailored to promote robust root development and abundant flowering. Easy to apply in granular form, this 24-ounce package is ideal for medium-sized planting areas. You can maintain your garden with minimal effort while seeing measurable improvements in your Crepe Myrtles’ growth.

Because it is formulated specifically for Crepe Myrtles and similar plants, this plant food minimizes nutrient waste and maximizes results. Regular use supports consistent nourishment, making it easier to keep your garden thriving. However, the high phosphorus content may not suit all plant types, so use it as intended.

Best for: Gardeners seeking a fast-acting, water-soluble fertilizer to support healthy growth and flowering of Crepe Myrtles and related plants.

What We Like:

• Quick nutrient absorption through roots and leaves
• High phosphorus content encourages strong root and flower development
• Convenient granular form for easy application
• Suitable size for medium garden coverage

Specification:

Feature	Details
Manufacturer	Carl Pool
Size	24 oz (680 g)
Nutrient Ratio	8-55-7
Form	Granular, water-soluble
Intended Use	Crepe Myrtles, similar plants

Crepe Myrtle Liquid Fertilizer Plant Food 8 oz

Crepe Myrtle Liquid Fertilizer is designed to help your trees flourish with vibrant blooms and strong growth. This nutrient-rich liquid formula delivers essential elements directly to your crepe myrtle, encouraging healthy flowering and root development. Its easy-to-use liquid form ensures precise application, making tree care simple and effective.

Maintaining your crepe myrtle becomes straightforward with this 8 oz fertilizer. Regular use supports steady growth and enhances the tree’s natural beauty without complicated preparation. The targeted nutrients work efficiently to strengthen roots, helping your tree withstand varying outdoor conditions.

This fertilizer is specifically formulated for crepe myrtles, ensuring the right balance of nutrients for these unique trees. While the container size is compact, it offers concentrated nourishment that can be reapplied as needed during the growing season. The product’s design focuses on convenience and effectiveness for gardeners and homeowners.

Made in the USA by TPS Nutrients, this liquid fertilizer meets high standards for quality and reliability. It provides a practical solution for those seeking a focused approach to crepe myrtle care, avoiding unnecessary additives or overly broad formulas.

Best for: Gardeners and homeowners looking to promote healthy growth and vibrant flowers in their crepe myrtle trees with a targeted, easy-to-apply liquid fertilizer.

What We Like:

• Promotes strong root growth and vibrant blooms
• Convenient liquid form for precise application
• Concentrated 8 oz size suitable for repeated use
• Specifically formulated for crepe myrtle trees

Specification:

Feature	Details
Manufacturer	TPS Nutrients
Volume	8 oz (237 ml)
Form	Liquid
Intended Use	Crepe myrtle trees
Made in	USA

Crape Myrtle & Flowering Trees Granular Fertilizer

Crape Myrtle & Flowering Trees Granular Fertilizer delivers consistent nourishment to enhance the beauty of your flowering trees. This professional-grade formula is designed to support Crape Myrtles and other ornamentals by providing steady nutrient release. You’ll notice larger, more vibrant blooms and healthier plants, thanks to the balanced 10-15-9 NPK and essential micronutrients such as sulfur and zinc.

The fertilizer uses five different nitrogen sources to ensure a slow, even release of nutrients over four months. This steady feeding helps reduce stress on plants and improves immunity, promoting long-term vitality. Applying it in early spring at full strength kickstarts growth, while follow-up applications every 60 days at half rate maintain optimal health.

Whether your trees are planted in the ground or containers, this granular fertilizer adapts to both settings, making it easy to care for your ornamentals. Its slow-release design means fewer applications, saving you time and effort while supporting sustained flowering and growth throughout the season.

Keep in mind, for best results, multiple applications are necessary, and the 2-pound packaging suits small to medium-sized gardens rather than large landscaping jobs. This formula is specifically tailored for flowering trees and shrubs, so it may not be ideal for other plant types.

Best for: Gardeners and landscapers seeking a reliable, slow-release fertilizer to promote vibrant blooms and healthy growth in flowering trees like Crape Myrtle and other ornamentals.

What We Like:

• Balanced 10-15-9 NPK formula with essential micronutrients for complete nutrition
• Slow-release nitrogen from five sources ensures steady nutrient availability
• Supports larger flowers, increased bloom quantity, and stronger plant immunity
• Suitable for both in-ground and container-grown flowering trees

Specification:

Feature	Details
Manufacturer	NutriStar
NPK Ratio	10-15-9
Weight	2 lb
Application Rate	Full rate in early spring; half rate every 60 days
Suitable For	Flowering trees and shrubs, including Crape Myrtle

Natures Wisdom Crepe Myrtle Tree Fertilizer 1.5Lb

Natures Wisdom Crepe Myrtle Tree Fertilizer is designed to bring vibrancy and health to your crepe myrtle trees with minimal effort. This specialized formula focuses on boosting both blooms and lush foliage, helping your plants flourish even in challenging conditions. Its high phosphorus content encourages larger and more abundant flowers, solving the problem of weak or sparse blooming.

The fertilizer’s 8-55-7 nutrient ratio targets flowering and foliage growth specifically for crepe myrtles and other ornamental plants. It comes as a water-soluble powder that is easy to mix—just one tablespoon per gallon of water. This flexibility allows you to apply it as a soil drench, foliar spray, or root feed, making maintenance straightforward and adaptable to your garden’s needs.

Natures Wisdom’s formula works quickly to nourish roots and leaves, promoting healthier plants without the risk of burning. The powder dissolves efficiently, ensuring rapid nutrient absorption. This makes it a convenient solution for gardeners looking to maintain vibrant growth without frequent or complicated treatments.

Packaged in a 1.5 lb container with a measuring scoop, this fertilizer is practical for small to medium gardens. However, its higher phosphorus content means it’s best suited for flowering plants rather than foliage-only varieties. Also, since it’s only available as a powder, you’ll need to prepare the mix before each use.

Best for: Gardeners seeking an easy-to-use fertilizer that enhances blooms and foliage in crepe myrtle trees and other flowering ornamentals.

What We Like:

• High phosphorus formula promotes abundant blooms
• Multiple application options: soil, foliar, and root feeding
• Water-soluble powder ensures fast nutrient uptake
• Safe for use in hot, dry weather
• Comes with a measuring scoop for precise dosing

Specification:

Feature	Details
Manufacturer	Natures Wisdom
Weight	1.5 lb (0.68 kg)
Nutrient Ratio	8-55-7
Form	Water-soluble powder
Application	Soil drench, foliar, root feeding

Crepe Myrtle Liquid Fertilizer Concentrate 8 oz

Crepe Myrtle Liquid Fertilizer Concentrate 8 oz is designed to bring your crepe myrtle plants to life with vibrant blooms and healthy foliage. This concentrated formula targets the specific nutrient needs of crepe myrtle trees, helping to solve common problems like weak growth and sparse flowering. It works quickly and efficiently, providing your plants with the nourishment they need to thrive.

The easy-to-use liquid concentrate simply dilutes with water and fits seamlessly into your regular watering routine. Its fast absorption means your plants receive immediate nutrients without the risk of overfeeding or mess. This makes maintenance straightforward and stress-free, even for those new to plant care.

Whether your crepe myrtles are in garden beds, containers, or indoors, this fertilizer supports strong roots and abundant flowers to ensure consistent growth and resilience. Its balanced 3-5-4 nutrient ratio is tailored to promote lush leaves and vibrant blossoms, enhancing the overall health and appearance of your plants.

Packaged in a durable 8 oz bottle, it offers long-lasting value without bulk. While the liquid form requires careful dilution, this product delivers targeted care with minimal effort, making it a practical choice for gardeners focused on quality results.

Best for: Gardeners wanting a reliable, easy-to-apply liquid fertilizer that promotes healthy growth and vibrant blooms in crepe myrtle trees.

What We Like:

• Balanced 3-5-4 formula supports root strength and flower production
• Quick absorption delivers nutrients immediately
• Simple dilution fits into regular watering routines
• Suitable for containers, garden beds, and indoor plants
• Compact 8 oz bottle for convenient storage and use

Specification:

Feature	Details
Manufacturer	Not specified
Volume	8 oz (237 ml)
Nutrient Ratio	3-5-4 (N-P-K)
Application	Dilute with water
Suitable for	Crepe myrtle trees

BioAdvanced 12 Month Tree & Shrub Protector Granules

BioAdvanced 12 Month Tree & Shrub Protector Granules provide a simple and effective way to guard your plants against harmful insects. This product targets pests such as Japanese beetles, emerald ash borers, and aphids, helping to keep your trees and shrubs healthy for up to a year with just one application. Its long-lasting effect reduces the need for repeated treatments, saving you time and effort.

Designed for ease of use, these granules require no mixing or spraying. You just sprinkle them around the base of your plants, measure easily with the built-in cup, and water them in. This straightforward application method makes pest control accessible, even for those with busy schedules or limited gardening experience.

Beyond pest protection, the granules serve as a slow-release fertilizer, gradually delivering essential nutrients to support plant growth and vitality. This dual action helps maintain strong, resilient crape myrtles and other shrubs, promoting healthier landscapes with less maintenance.

The product is intended for outdoor use around trees, shrubs, and container plants. Its effectiveness depends on proper watering after application, and it may take some time to show results since it works gradually to control pests.

Best for: Homeowners and gardeners seeking a low-maintenance, year-round solution for insect control and plant nourishment.

What We Like:

• Provides extended pest protection with a single application
• Combines insect control with slow-release fertilization
• Simple application with no spraying or mixing required
• Built-in measuring cup ensures accurate dosing

Specification:

Feature	Details
Manufacturer	BioAdvanced
Application Time	Up to 12 months
Target Pests	Japanese beetles, emerald ash borers, aphids
Usage Area	Trees, shrubs, container plants
Packaging	Granules with built-in measuring cup

Miracle-Gro Tree and Shrub Fertilizer Spikes (12)

Miracle-Gro Tree and Shrub Fertilizer Spikes provide a simple and effective way to nourish your crape myrtles and other shrubs. These spikes deliver essential nutrients directly to the root zone, promoting healthy growth without the hassle of frequent feeding. The slow-release formula ensures plants receive balanced nutrition over time, reducing the risk of over-fertilizing.

Using the spikes is straightforward. Just water the soil around the drip line, then insert the spikes about 3 feet apart just below the surface. This targeted feeding method encourages vibrant foliage and strong root development. Applying the spikes twice a year—in spring and fall—helps maintain your plants’ health through changing seasons.

Each pack contains 12 spikes, which can feed multiple trees depending on their size. This makes it a practical choice for gardeners managing several shrubs or small trees. However, proper placement and spacing are important to maximize effectiveness, which may require a bit of care for first-time users.

While the spikes support seasonal feeding well, they are not designed for year-round nutrient delivery. For larger trees with extensive root zones, additional spikes may be needed to cover the entire area. Overall, this product offers a convenient and balanced nutrition solution tailored to the needs of crape myrtles and similar plants.

Best for: Gardeners seeking an easy-to-use, slow-release fertilizer to support the growth and health of crape myrtles and other shrubs.

What We Like:

• Balanced 15-5-10 NPK formula supports vibrant foliage and strong growth
• Slow-release design reduces the frequency of fertilizing
• Simple application process with clear instructions
• Suitable for multiple trees depending on size
• Promotes targeted root zone feeding for effective nutrient uptake

Specification:

Feature	Details
Manufacturer	Miracle-Gro
Quantity	12 fertilizer spikes
Nutrient Ratio	15-5-10 (N-P-K)
Application Area	Root zone around drip line
Recommended Use	Spring and fall

TreeHelp Premium Fertilizer for Crapemyrtle

TreeHelp Premium Fertilizer for Crapemyrtle offers a reliable way to nourish your trees throughout the growing season. Its slow-release formula steadily delivers nutrients, helping your Crapemyrtles develop strong roots and vibrant flowers without the need for frequent reapplication. This steady feeding supports healthier growth and enhances the natural beauty of your trees.

Designed specifically for Crapemyrtle trees, this fertilizer comes in easy-to-apply granules. The clear instructions make it simple to apply the right amount, ensuring nutrients reach the areas where your trees need them most. This targeted feeding reduces waste and promotes efficient nutrient use.

Each 48-ounce package is versatile enough to treat one large tree or several smaller ones, making it suitable for gardens of different sizes. While the quantity fits moderate landscaping needs, larger areas with multiple big trees may require additional packages to maintain optimal tree health.

TreeHelp Premium Fertilizer fits seamlessly into regular tree care routines, providing dependable nourishment without complicated maintenance. Its focused formulation and ease of use make it an efficient choice for gardeners who want consistent results with minimal effort.

Best for: Gardeners and landscapers seeking effective, slow-release fertilizer designed to support healthy growth and flowering of Crapemyrtle trees.

What We Like:

• Slow-release nutrients for continuous feeding throughout the season
• Clear application instructions with easy-to-use granules
• Suitable for both large single trees and multiple smaller trees
• Promotes strong root development and vibrant blooms

Specification:

Feature	Details
Manufacturer	TreeHelp
Weight	48 oz (1.36 kg)
Form	Granules
Intended Use	Crapemyrtle trees

Miracle-Gro All Purpose Water Soluble Plant Food

Miracle-Gro All Purpose Water Soluble Plant Food offers a simple solution for gardeners seeking fast, vibrant growth in their crape myrtles and other outdoor plants. This fertilizer delivers nutrients in a form that plants absorb quickly, addressing common issues like slow growth and nutrient deficiencies. Mixing the powder with water allows for easy application, ensuring your plants get the nourishment they need without risk of burning.

The balanced 24-8-16 NPK formula is enriched with chelated iron and trace elements. These added nutrients support healthy foliage and strong roots, helping your crape myrtles develop larger, more robust leaves and flowers. Regular feeding every 7 to 14 days maintains steady growth and vibrant color, making plant care straightforward and effective.

Designed for versatility, this water-soluble plant food can be used on container plants or directly in the ground. Its coverage extends up to 1,200 square feet, making it ideal for both small gardens and larger landscapes. Although it requires mixing before use and more frequent application than some slow-release fertilizers, this approach ensures plants receive nutrients precisely when they need them.

Best for: Gardeners and plant enthusiasts seeking a fast-acting, versatile fertilizer to promote vibrant growth and health in a wide variety of outdoor plants, including crape myrtles.

What We Like:

• Balanced 24-8-16 NPK formula with chelated iron and trace elements
• Easy-to-mix powder for tailored nutrient delivery
• Suitable for container and in-ground gardening
• Covers up to 1,200 sq. ft. for extended use
• Promotes healthy growth without burning plants

Specification:

Feature	Details
Manufacturer	Miracle-Gro
Nutrient Ratio	24-8-16 (NPK)
Form	Water-soluble powder
Coverage Area	Up to 1,200 sq. ft.
Application Rate	1-1/2 tablespoons per 1-1/2 gallons water
Recommended Use	Outdoor plants, including crape myrtles

SIMPLYGRO Old Farmer’s Almanac Fertilizer Spikes (6)

Experience hassle-free feeding with SIMPLYGRO Old Farmer’s Almanac Fertilizer Spikes, designed to make plant nutrition simple and effective. These spikes deliver nutrients directly to the roots, ensuring your crape myrtles and other plants get exactly what they need for healthy growth. No mixing or measuring is required, making feeding straightforward and mess-free.

The balanced 13-3-3 formula supports trees, shrubs, and evergreens by providing essential nutrients that encourage strong root development and vibrant foliage. Each spike slowly releases fertilizer, reducing the risk of overfeeding and promoting steady, long-lasting results. This targeted feeding method saves time and effort compared to traditional fertilizers.

Applying the spikes is easy: just insert them into the soil near your plants. This direct placement improves nutrient absorption but may be challenging in very hard or rocky ground. Each package contains six spikes, suitable for individual plants or small gardens. Larger areas may require multiple packages.

SIMPLYGRO’s design minimizes waste and cleanup, making maintenance simple. The natural composition ensures safe use around your garden without harmful residues. These spikes help maintain plant health with minimal upkeep, letting you focus on enjoying your garden.

Best for: gardeners and homeowners seeking an easy, targeted feeding solution for trees, shrubs, and evergreens, especially crape myrtles.

What We Like:

• Nutrients delivered directly to roots for efficient absorption
• Balanced 13-3-3 formula supports healthy plant growth
• Simple, mess-free application with slow-release spikes
• Suitable for trees, shrubs, and evergreens
• Natural composition reduces environmental impact

Specification:

Feature	Detail
Manufacturer	SIMPLYGRO
Weight	1.5 lb (0.68 kg)
Quantity	6 spikes per package
Nutrient Ratio	13-3-3
Intended Use	Trees, shrubs, evergreens

Factors to Consider When Choosing Fertilizer for Crape Myrtles

When choosing fertilizer for your crape myrtles, you’ll want to take into account the nutrient ratio to support healthy growth. Think about the form of fertilizer and how often you’ll need to apply it for the best results.

Also, keep in mind your plant’s specific needs and how your choices affect the environment.

Nutrient Ratio Importance

How do you guarantee your crepe myrtles get the right nutrients for vibrant blooms and strong growth? It all starts with choosing a fertilizer with the proper nutrient ratio. This ratio shows the balance of nitrogen, phosphorus, and potassium—each essential for different growth stages.

For crepe myrtles, you want a higher phosphorus and potassium content, like 8-55-7, to promote abundant flowering and sturdy stems. If the ratio leans too heavily on nitrogen, your plant might produce lots of leaves but fewer blooms. On the other hand, insufficient nutrients can stunt growth and reduce vitality.

Fertilizer Form Types

Although all fertilizers supply essential nutrients, the form you choose for your crepe myrtle affects how quickly and efficiently those nutrients reach the plant. Granular fertilizers release nutrients slowly when applied to the soil surface, feeding your plant over time without frequent applications.

Liquid fertilizers offer rapid absorption, ideal for foliar feeding or soil drenching when you want fast results. Water-soluble fertilizers dissolve easily in water, making mixing simple and allowing quick nutrient delivery.

Fertilizer spikes provide a slow, targeted release directly at the root zone, reducing waste and ensuring steady feeding. By understanding these forms, you can select the best fertilizer type that matches your crepe myrtle’s needs and your preferred application style for ideal growth and health.

Application Frequency Guidelines

Since crepe myrtles benefit from regular feeding during their active growth, you should plan to apply fertilizer every 6 to 8 weeks throughout the growing season. Slow-release fertilizers might need fewer applications, so always check the product recommendations. Avoid over-fertilizing, as too much can cause lush foliage but fewer blooms.

In early spring and late summer, consider adjusting your fertilization schedule to support healthy growth and vibrant flowers. As fall approaches, it’s best to reduce or stop fertilizing to prevent new growth that winter could damage. Tailoring your application frequency based on fertilizer type and seasonal needs helps keep your crepe myrtles thriving without encouraging weak growth or wasting resources.

Targeted Plant Growth

When choosing fertilizer for your crepe myrtles, you’ll want to focus on nutrient balance and delivery method to target growth effectively. Look for fertilizers with higher phosphorus and potassium levels to encourage vibrant blooms and healthy foliage. Applying nutrients directly to the root zone or foliage guarantees your crepe myrtle absorbs them where it needs them most, boosting growth efficiency.

Slow-release fertilizers are an excellent choice because they provide steady nourishment, supporting consistent flowering and overall development. Match the fertilizer’s NPK ratio to your plant’s current growth stage and health requirements for the best results. Additionally, selecting fertilizers enriched with micronutrients like iron, manganese, and zinc helps prevent deficiencies and promotes vigorous, robust growth.

This targeted approach maximizes your crepe myrtle’s potential.

Environmental Considerations

Choosing the right fertilizer for your crepe myrtles means balancing plant health with environmental impact. You should pick fertilizers with eco-friendly formulas that reduce runoff and protect water quality. Slow-release fertilizers are a smart choice because they lower nutrient leaching and prevent contamination.

Avoid products loaded with synthetic chemicals or high salt levels, as these can damage nearby ecosystems. Instead, consider organic or natural fertilizers that not only feed your plants but also improve soil health and encourage biodiversity. Be careful with timing and how much you apply—excess nutrients can wash into local waterways, causing problems.

Ease Of Use

Although many fertilizers nourish your crepe myrtles effectively, ease of use can make a big difference in how well you apply them. Look for fertilizers with clear, simple instructions so you won’t guess mixing ratios or application methods. Granular types that you can sprinkle around your plants and water in save time and minimize mess.

Liquid fertilizers that dissolve quickly and spray directly onto leaves or soil streamline feeding. Some fertilizers even come with measuring scoops or spikes, eliminating the need for extra tools and making application more convenient. Also, consider formulas that offer multiple application methods—soil drench, foliar spray, or root feeding—so you can select what fits your routine best.

Prioritizing ease of use ensures you feed your crepe myrtles consistently and correctly.

Frequently Asked Questions

When Is the Best Time to Prune Crape Myrtles?

You should prune crape myrtles in late winter or early spring before new growth starts. This timing helps you shape the tree and encourages healthy blooms without risking damage from cold weather or sap loss.

How Often Should Crape Myrtles Be Watered?

When it comes to watering crape myrtles, don’t let them dry out completely. You should water deeply once a week, especially during hot, dry spells, to keep them thriving and looking their best all season long.

What Pests Commonly Affect Crape Myrtles?

You’ll commonly see aphids, Japanese beetles, and powdery mildew affecting crape myrtles. Watch for sooty mold too, which grows on aphid honeydew.

Regular inspection helps you catch and control these pests early.

Can Crape Myrtles Grow in Partial Shade?

You’re in luck—crape myrtles can handle a bit of partial shade. While they love soaking up the sun, they’ll still thrive and bloom nicely with some filtered light or morning sun in your garden.

How Tall Do Crape Myrtle Trees Typically Grow?

Crape myrtle trees typically grow between 15 to 25 feet tall, but some varieties can reach up to 30 feet.

You’ll want to choose a variety that fits your space and care preferences for best results.

Conclusion

Choosing the right fertilizer for your crape myrtle might feel like a coincidence, but it’s really about matching your tree’s needs with the right nutrients. Whether you pick a liquid, granular, or spike option, you’re giving your crape myrtle the best chance to thrive.

So, don’t wait—feed your tree well, and watch how it rewards you with vibrant blooms and healthy growth. Using the best fertilizers for crape myrtles in 2026 ensures your tree stays strong and beautiful, proving that good care and good fortune often go hand in hand.