10 Best Fertilizers for Crape Myrtles in 2026 (Buyer’s Guide)

Pruning shears in hand, you stare up at a summer canopy missing the brilliant pinks and purples you expected. You bought the house for this exact tree, yet the branches sit stubbornly bare of blossoms.

Crape myrtles demand specific nutrients to trigger that heavy summer flowering. Choosing the right formula prevents leafy growth at the expense of actual blooms.

Let us fix that sparse canopy together. You will find the Best Fertilizers for Crape Myrtles right here.

Key Takeaways

  • Prioritize high phosphorus ratios because this specific nutrient directly drives heavy flower production.
  • Match the delivery method to your schedule, choosing water-soluble crystals for fast action or granules for slow release.
  • Account for the tree size when purchasing package weights so you do not run short mid-season.
  • Confirm the formula suits container-grown specimens if your trees live on a patio or deck.
  • Look for balanced trace minerals that support overall root health and disease resistance.

Our Top Best Fertilizers For Crape Myrtles Picks

Ultimate Bloom Booster Carl Pool Crepe Myrtle Plant Food Carl Pool Crepe Myrtle Plant Food High phosphorus ratio Fast root absorption Water soluble formula View on Amazon Read Review
Compact Garden Essential NutriStar Crape Myrtle Granular Fertilizer 2 lb NutriStar Crape Myrtle Granular Fertilizer 2 lb Slow release granules Multi-purpose tree food Easy storage size View on Amazon Read Review
Bulk Property Solution NutriStar Crape Myrtle Granular Fertilizer 25 lb NutriStar Crape Myrtle Granular Fertilizer 25 lb Large bulk size Long lasting supply Balanced granular blend View on Amazon Read Review
Quick Response Treatment Plant Food Company Crepe Myrtle Liquid 8 oz Plant Food Company Crepe Myrtle Liquid 8 oz Instant nutrient uptake Convenient small bottle Easy liquid mixing View on Amazon Read Review
Midsize Yard Favorite Plant Food Company Crepe Myrtle Liquid 32 oz Plant Food Company Crepe Myrtle Liquid 32 oz Generous thirty-two ounce size Balanced liquid concentrate Simple watering can application View on Amazon Read Review
Professional Landscaping Choice Plant Food Company Crepe Myrtle Liquid Gallon Plant Food Company Crepe Myrtle Liquid Gallon Massive gallon jug High volume value Professional grade supply View on Amazon Read Review
Balanced Weekend Project NutriStar Crape Myrtle Granular Fertilizer 4 lb NutriStar Crape Myrtle Granular Fertilizer 4 lb Four pound box Slow release nutrition Safe for turf View on Amazon Read Review
Gentle Plant Care Leaves And Soul Crepe Myrtle Liquid 8 oz Leaves And Soul Crepe Myrtle Liquid 8 oz Gentle on young trees Low risk formula Convenient 8oz size View on Amazon Read Review
Phosphorus Powerhouse Natures Wisdom Water Soluble Crepe Myrtle Food Natures Wisdom Water Soluble Crepe Myrtle Food High phosphorus content Dissolves completely in water Promotes heavy flowering View on Amazon Read Review
Midsize Property Standard NutriStar Crape Myrtle Granular Fertilizer 15 lb NutriStar Crape Myrtle Granular Fertilizer 15 lb Fifteen pound bag Ideal for medium yards Consistent slow release View on Amazon Read Review
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More Details on Our Top Picks

  1. Carl Pool Crepe Myrtle Plant Food

    Carl Pool Crepe Myrtle Plant Food

    Ultimate Bloom Booster

    View on Amazon

    If you want maximum flower production, this heavy-hitting water-soluble formula is your best ally. The exceptionally high phosphorus ratio targets the root causes of shy blooming, turning stubborn branches into vibrant floral displays.

    You will appreciate how quickly the liquid formulation absorbs compared to slow-acting granular alternatives. Targeted nutrition goes straight to work when your trees need it most during the peak growing season.

    Just remember that high-phosphorus mixes require careful measuring to avoid nutrient overload. You must follow the mixing instructions precisely to protect tender root systems.

    • Brand:Carl Pool
    • Type:Water Soluble Fertilizer
    • Size:24 oz
    • Application Method:Liquid watering
    • Formulation:8-55-7
    • Target Audience:Crape Myrtle growers
    • Additional Feature:Fast-acting liquid plant food
    • Additional Feature:Promotes intense flower development
    • Additional Feature:Designed specifically for flowering trees
  2. NutriStar Crape Myrtle Granular Fertilizer 2 lb

    NutriStar Crape Myrtle Granular Fertilizer 2 lb

    Compact Garden Essential

    View on Amazon

    Gardeners managing smaller yards or container trees will find this granular option incredibly practical. It feeds more than just crape myrtles, working wonders for desert willows and mimosas too.

    Slow-release granules mean you spend less time mixing and more time enjoying your yard. Nutrients break down gradually with each watering session.

    The two-pound box is easy to store on a garage shelf. However, you will need a larger package if you manage a sprawling suburban property with mature trees.

    • Brand:NutriStar
    • Type:Granular Fertilizer
    • Size:2 lb
    • Application Method:Soil broadcasting
    • Formulation:10-15-9
    • Target Audience:Home gardeners
    • Additional Feature:Feeds container grown trees
    • Additional Feature:Supports multiple flowering species
    • Additional Feature:Feeds roots over time
  3. NutriStar Crape Myrtle Granular Fertilizer 25 lb

    NutriStar Crape Myrtle Granular Fertilizer 25 lb

    Bulk Property Solution

    View on Amazon

    Properties lined with rows of mature trees demand a heavy-duty supply. This generous twenty-five pound bag keeps your landscape fed through multiple seasons without constant trips to the garden center.

    The balanced nutrient profile supports healthy branch structure alongside steady blossom production. Granules distribute easily around the drip line of large specimens.

    Storing such a heavy bag requires a dry, dedicated space in your shed. You should also invest in a proper spreader for even field distribution.

    • Brand:NutriStar
    • Type:Granular Fertilizer
    • Size:25 lb
    • Application Method:Broadcast spreader
    • Formulation:10-15-9
    • Target Audience:Large property owners
    • Additional Feature:Heavy duty packaging
    • Additional Feature:Feeds many large trees
    • Additional Feature:Consistent slow release
  4. Plant Food Company Crepe Myrtle Liquid 8 oz

    Plant Food Company Crepe Myrtle Liquid 8 oz

    Quick Response Treatment

    View on Amazon

    Houseplants and patio trees needing a fast pick-me-up respond wonderfully to this compact liquid. You can mix a small batch in minutes for a targeted nutrient injection.

    Liquid formulas bypass the soil breakdown phase entirely. Your plants absorb the vital minerals almost immediately upon watering.

    The eight-ounce bottle disappears fast if you maintain a large garden. Keep this option reserved for spot treatments on struggling plants.

    • Brand:Plant Food Company
    • Type:Liquid Plant Food
    • Size:8 oz
    • Application Method:Pour and mix
    • Target Audience:Small garden owners
    • Additional Feature:Promotes lasting blooms
    • Additional Feature:Simple liquid application
    • Additional Feature:Compact starter size
  5. Plant Food Company Crepe Myrtle Liquid 32 oz

    Plant Food Company Crepe Myrtle Liquid 32 oz

    Midsize Yard Favorite

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    Homeowners with modest suburban yards will find this thirty-two-ounce bottle hits the sweet spot. It offers enough concentrate to feed multiple trees throughout the entire spring and summer.

    Diluting the liquid into your watering can takes minimal effort. You get the speed of liquid feeding without running out of product after one afternoon.

    Plastic bottles of this size take up some shelf space. Always store the cap tightly sealed to prevent sticky spills in your storage area.

    • Brand:Plant Food Company
    • Type:Liquid Plant Food
    • Size:32 oz
    • Application Method:Watering can
    • Target Audience:Residential gardeners
    • Additional Feature:Extended bloom formula
    • Additional Feature:Easy measuring cap
    • Additional Feature:Suitable for container plants
  6. Plant Food Company Crepe Myrtle Liquid Gallon

    Plant Food Company Crepe Myrtle Liquid Gallon

    Professional Landscaping Choice

    View on Amazon

    Commercial properties and dedicated enthusiasts need volume that keeps pace with their ambitions. This gallon jug delivers uncompromised liquid nutrition for extensive garden collections.

    Purchasing by the gallon lowers your cost per application significantly. You can service dozens of trees without worrying about a sudden shortage.

    Lifting and pouring a heavy gallon jug requires a steady grip. Consider transferring some liquid into a smaller container for easier daily mixing.

    • Brand:Plant Food Company
    • Type:Liquid Plant Food
    • Size:1 Gal
    • Application Method:Hose end or watering can
    • Target Audience:Professional landscapers
    • Additional Feature:Bulk liquid concentrate
    • Additional Feature:Long term garden supply
    • Additional Feature:Maximum bloom longevity
  7. NutriStar Crape Myrtle Granular Fertilizer 4 lb

    NutriStar Crape Myrtle Granular Fertilizer 4 lb

    Balanced Weekend Project

    View on Amazon

    Weekend gardeners looking to revitalize a few accent trees will appreciate this four-pound box. It provides enough slow-release nutrition to carry your plants through their prime growing months.

    Granules integrate seamlessly into topsoil without burning nearby turf. You simply sprinkle the recommended amount and let the rain do the work.

    While versatile for various flowering trees, it requires moisture to activate. Dry spells mean you must water the area manually after application.

    • Brand:NutriStar
    • Type:Granular Fertilizer
    • Size:4 lb
    • Application Method:Hand scattering
    • Formulation:10-15-9
    • Target Audience:Suburban homeowners
    • Additional Feature:Feeds multiple tree types
    • Additional Feature:Container and outdoor use
    • Additional Feature:Gradual nutrient release
  8. Leaves And Soul Crepe Myrtle Liquid 8 oz

    Leaves And Soul Crepe Myrtle Liquid 8 oz

    Gentle Plant Care

    View on Amazon

    Botanical enthusiasts who prefer a mild nutrient profile will love this gentle liquid. The conservative NPK ratio prioritizes steady vegetative health over forced, explosive growth.

    Young trees benefit greatly from this low-risk formula. You avoid the dangers of chemical burn common with harsher commercial blends.

    The eight-ounce container suits small patio setups best. Owners of massive trees will need to reorder frequently to maintain a feeding schedule.

    • Brand:Leaves & Soul
    • Type:Liquid Plant Food
    • Size:8 oz
    • Application Method:Liquid drench
    • Formulation:3-5-4
    • Target Audience:Indoor and outdoor growers
    • Additional Feature:Specially formulated liquid
    • Additional Feature:Supports young root systems
    • Additional Feature:Easy to use dropper
  9. Natures Wisdom Water Soluble Crepe Myrtle Food

    Natures Wisdom Water Soluble Crepe Myrtle Food

    Phosphorus Powerhouse

    View on Amazon

    Dull trees that refuse to flower respond dramatically to this high-phosphorus blend. The water-soluble powder dissolves cleanly in water to create a potent bloom-inducing drench.

    Nutrients reach the root zone instantly for a rapid biological response. Your branches will soon heavy up with colorful clusters.

    Specialty formulas like this require strict adherence to dosage charts. Overlooking the instructions can easily result in nutrient lock-out for your plants.

    • Brand:Natures Wisdom
    • Type:Water Soluble Powder
    • Size:1.5 Lb
    • Application Method:Root drench
    • Formulation:8-55-7
    • Target Audience:Flowering tree owners
    • Additional Feature:Balanced nutrient blend
    • Additional Feature:Works on shrubs and vines
    • Additional Feature:Quick absorption rate
  10. NutriStar Crape Myrtle Granular Fertilizer 15 lb

    NutriStar Crape Myrtle Granular Fertilizer 15 lb

    Midsize Property Standard

    View on Amazon

    Properties with half a dozen mature trees find their match in this fifteen-pound bag. It bridges the gap between small retail boxes and industrial agricultural sacks.

    The granular composition feeds trees steadily through summer storms and heatwaves. Consistent feeding keeps leaf color deep and flower counts high.

    Fifteen pounds of material requires a dry storage bin to prevent clumping. Make sure you use a scoop to measure out exact amounts per tree size.

    • Brand:NutriStar
    • Type:Granular Fertilizer
    • Size:15 lb
    • Application Method:Soil distribution
    • Formulation:10-15-9
    • Target Audience:Estate owners
    • Additional Feature:Feeds container and yard trees
    • Additional Feature:Long lasting nourishment
    • Additional Feature:Supports vibrant blossoms
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James Wilson
James Wilson

James Wilson is a product researcher and the lead writer at DeTop Best, where he tests, compares, and writes buying guides across a wide range of everyday product categories. With a hands-on approach to research and a healthy skepticism toward marketing hype, James focuses on giving readers practical, no-nonsense advice they can actually use before making a purchase. When he's not digging through spec sheets and customer reviews, he's usually trying out the latest gadget or home upgrade himself.

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