Best Fertilizer For Crepe Myrtle Tree

#1 · Best Overall

1. TPS NUTRIENTS Crepe Myrtle Fertilizer

• Weight: 0.32 kg
• Form: Liquid

Best for: Liquid bloom and root support.

Why it ranks #1: Made specifically for crepe myrtles, this liquid plant food supports colorful blooms, root development, and fresh leaf and stem growth.

Liquid form is the key distinction of TPS Nutrients Crepe Myrtle Fertilizer, a plant food aimed specifically at crepe myrtles. It supports colorful blooms while also supplying nutrients for root development, giving gardeners a single product focused on flowering and the tree’s underlying growth.

The formula’s stated support for fuller, more colorful blooms makes it relevant when flowering is the main goal, while its root-development support addresses water and nutrient uptake. It also supports fresh leaf and stem development, which can help a crepe myrtle maintain a fuller appearance. As a liquid, it differs from granular and spike products in this roundup; the supplied information does not specify a mixing ratio or application schedule, so those details need to come from the product directions.

Skip it if you want a stated nutrient ratio and a soluble formulation; Carl Pool Crepe Myrtle Plant Food lists 8-55-7 and feeds through roots and leaves.

For gardeners choosing a crepe-myrtle-specific liquid focused on blooms, roots, and fresh growth, this is a focused option. Check the product directions for application details, since the supplied information gives no mixing rate or schedule.

Listed on Amazon as: Crepe Myrtle Fertilizer, Liquid Plant Food for Long-Lasting Blooms, 8 oz

#2 · Best Slow-Release Granules

2. Nelson NutriStar

• Weight: 2 lb
• Form: Granules

Best for: Slow-release flowering tree granules.

Why it ranks #2: Its 10-15-9 blend is designed for crape myrtles and flowering trees, with micronutrients and several nitrogen sources for gradual feeding.

Five nitrogen sources with different release characteristics distinguish Nelson NutriStar, helping provide a more constant nutrient release for crepe myrtles and other flowering trees. Its 10-15-9 formula also includes sulfur and four named micronutrients, with nutrients aimed at increasing bloom number, size, and quantity.

Granular form suits gardeners looking for a soil-applied product rather than a liquid feed, while the five nitrogen sources are described as having different release characteristics to support a constant release rate. The 10-15-9 analysis and sulfur, copper, iron, manganese, and zinc make the nutrient profile explicit. It is also listed for flowering trees beyond crepe myrtle, so one product can serve a broader ornamental planting; follow its directions and application precautions.

Skip it if you want a water-soluble formula rather than slow-release granules; Carl Pool Crepe Myrtle Plant Food is listed as water soluble.

This suits gardeners feeding crepe myrtles alongside other flowering trees who want a granular, multi-source nitrogen formula. Application involves the listed protective gear, and the supplied directions should guide timing and use.

Listed on Amazon as: Crape Myrtle & All Flowering Trees Desert Willow Mimosa Orchid Tree Indoor Outdoor Container Grown Granular Fertilizer NutriStar 10-15-9 (2 lb.)

#3 · Best Water-Soluble Blend

3. Carl Pool Crepe Myrtle Plant Food

• Weight: 1.5 lb
• Form: Granules

Best for: Soluble crepe myrtle feeding.

Why it ranks #3: This crepe-myrtle-specific 8-55-7 plant food is water soluble and is described as feeding through both roots and leaves.

Carl Pool’s 8-55-7 water-soluble formula is the clearest differentiator, giving crepe myrtle growers a named nutrient ratio in a product that feeds through both roots and leaves. Its description also calls out fast results and a formulation intended for optimum plant growth.

The water-soluble form and root-and-leaf feeding approach offer a different workflow from spikes that are placed in soil: this product is applied as a soluble plant food. Its 8-55-7 ratio is stated on the title, and micronutrients are noted in the product information. Those specifics can help shoppers comparing formulas, but the supplied details do not give a dilution rate or application frequency, so consult the package directions before use.

Skip it if you prefer an application rate and scoop included in the listed components; Natures Wisdom Crepe Myrtle Tree Fertilizer includes a measuring scoop.

Crepe myrtle growers who want a soluble formula with a stated 8-55-7 ratio and root-and-leaf feeding may find this a useful fit. Its listing does not provide the dilution or timing details needed to plan application.

Listed on Amazon as: Crepe Myrtle Plant Food — Water Soluble 24oz 8-55-7 — Carl Pool Fertilizers

#4

4. Natures Wisdom Crepe Myrtle Food

• Weight: 1.7 lb
• Form: Powder

Best for: Multi-ornamental soluble powder.

Why it ranks #4: A powder formulated specifically for crepe myrtles, it also suits other flowering trees, shrubs, and vines, with a measuring scoop included.

A measuring scoop inside the jar makes Natures Wisdom’s water-soluble crepe myrtle fertilizer easy to portion, while its formula is also listed for flowering trees, shrubs, and vines. The product is specifically optimized for crepe myrtles and described as supporting blooms and foliage.

The powder form is mixed with water, and the included scoop supports measuring for that preparation workflow. Its stated use across flowering trees, shrubs, and vines can suit gardens with several ornamental types, while the crepe-myrtle-specific positioning keeps the central use clear. The listed derived ingredients include magnesium sulfate and chelated forms of copper, iron, manganese, and zinc. Use the package directions for the mixing amount and application, rather than assuming one rate fits every plant.

Skip it if you want a ready-to-place spike instead of preparing a soluble feed; SimplyGro Tree & Shrub Fertilizer Spikes are applied as sticks.

For gardeners with crepe myrtles and other flowering ornamentals, this powder combines a targeted formula with a scoop for measuring. It fits a mixing-based routine, not a preference for direct soil placement without preparation.

Listed on Amazon as: Natures Wisdom Crepe Myrtle Tree 8-55-7 Water Soluble Fertilizer Plant Food, Balanced Nutrient Blend for Flowering Trees, Shrubs and Vines | 1.5 Lb

#5

5. Scotts Evergreen Tree and Shrub Food

• Weight: 3 lb
• Form: Powder

Best for: Tree and shrub soil feeding.

Why it ranks #5: This flowering-tree and shrub food feeds for up to two months and is applied to soil, though its listed examples emphasize acid-loving plants.

Feeding for up to two months sets Scotts Evergreen, Flowering Tree & Shrub Continuous Release Plant Food apart from quick soluble feeds. It is applied directly to soil and is listed for flowering trees and shrubs, with support for vigorous root growth and lush foliage.

The powder is raked into the top one to three inches of soil or mulch, directing the feeding toward the root system according to the instructions. Its two-month feeding period gives gardeners a defined interval, while the product is listed for many trees and shrubs, including dogwoods, hydrangeas, magnolias, and evergreens. Crepe myrtle is not named in the supplied examples, so this is a broader tree-and-shrub choice rather than a specifically labeled crepe myrtle formula.

Skip it if you need a product explicitly labeled for crepe myrtles; Carl Pool Crepe Myrtle Plant Food is titled specifically for that tree.

This suits gardeners seeking soil-applied feeding for a range of trees and shrubs, including listed flowering ornamentals. Crepe myrtle is not named in the supplied details, so plant-specific labeling may matter to your choice.

Listed on Amazon as: Scotts Evergreen, Flowering Tree & Shrub Continuous Release Plant Food

#6

6. SimplyGro Tree and Shrub Spikes

• Weight: 3 lb
• Form: Sticks

Best for: General-purpose 8-8-8 spikes.

Why it ranks #6: Its 8-8-8 formula supplies nitrogen, phosphorus, and potassium for a broad range of trees and shrubs, but is not crepe-myrtle-specific.

A balanced 8-8-8 formula in five-inch spikes gives SimplyGro Tree & Shrub Fertilizer a clearly stated general-purpose profile for flowering and other trees and shrubs. Each spike supplies nitrogen, phosphorus, and potassium, with the listing connecting those nutrients to growth, flowering, and root strength.

The stick form supports direct placement instead of mixing a soluble feed, and the 5-inch size is specified in the product information. Its equal 8-8-8 analysis is described for deciduous, coniferous, decorative, flowering, and fruiting trees and shrubs, making it relevant to mixed plantings that include crepe myrtle. The listing calls this a set-it-and-forget-it solution, but does not provide a specific feeding interval in the supplied details; use the package directions for placement and timing.

Skip it if you need a crepe-myrtle-specific product rather than general tree and shrub nutrition; TPS Nutrients Crepe Myrtle Fertilizer is specifically titled for crepe myrtles.

This suits gardeners feeding a mixed tree and shrub planting who prefer five-inch spikes and an even 8-8-8 analysis. Crepe myrtle is not the only target, and the supplied listing leaves feeding intervals unspecified.

Listed on Amazon as: Tree & Shrub Fertilizer Spikes (12 Spikes – 3.0 Lbs)

#7

7. Jobe's Tree Fertilizer Spikes

• Weight: 8.3 lb
• Form: Sticks

Best for: Dripline tree fertilizer spikes.

Why it ranks #7: These 16-4-4 spikes feed deciduous trees and shrubs through the season and require no mixing, but the product is not tailored to crepe myrtles.

Jobe’s 16-4-4 spikes are placed around a tree’s dripline, putting continuous-supply nutrients below the surface near active roots. The product is listed for deciduous trees and shrubs, with a no-mixing, no-measuring application approach and season-long feeding.

The spike format avoids preparing a liquid mixture, and the directions specify insertion around each tree’s dripline in early spring and late fall. Its stated purpose is to supply nutrients below the surface where active roots grow, while the 16-4-4 analysis gives a named nutrient ratio. The listing says the spikes feed all season and will not burn trees. Crepe myrtle is not specifically named, so this is a general deciduous tree and shrub option.

Skip it if you want a fertilizer explicitly named for crepe myrtle; TPS Nutrients Crepe Myrtle Fertilizer is a targeted liquid option.

This fits gardeners who prefer dripline placement and spike feeding for deciduous trees and shrubs, with early-spring and late-fall directions. Crepe myrtle is not named in the listing, so consider that boundary.

Listed on Amazon as: Jobe's Tree Fertilizer Spikes, 16-4-4 Time Release Fertilizer for All Shrubs & Trees, 15 Spikes per Package – 2

#8

8. Old Farmer's Almanac Tree Spikes

• Weight: 1.5 lb
• Form: Sticks

Best for: Natural tree and shrub spikes.

Why it ranks #8: The natural tree-and-shrub spikes are directed for spring and late-fall use, but the listing gives no crepe-myrtle-specific formulation.

Six TruSpikes give this Old Farmer’s Almanac tree and shrub fertilizer a direct soil-placement format, avoiding the need to prepare a liquid feed. Its listed ingredients include corn gluten meal, urea, muriate of potash, and ammonium phosphate, and directions call for early-spring and late-fall application.

The stick form makes this a different application workflow from soluble powders: the directions say to water well before application and drive each spike into the soil with a hammer. That placement method may suit gardeners who prefer discrete feeding points around trees and shrubs. The listed seasonal timing is early spring and late fall, so it is not presented as a frequent liquid-feed routine. The supplied information does not identify a crepe-myrtle-specific nutrient ratio or application spacing.

Skip it if you need a stated 8-8-8 formula and 5-inch spike specification; SimplyGro Tree & Shrub Fertilizer Spikes lists both.

This can suit gardeners who want spike-form tree and shrub feeding and can follow the listed seasonal directions. Crepe myrtle is not singled out in the supplied details, and no nutrient ratio or spacing is stated.

Listed on Amazon as: SIMPLYGRO Old Farmer's Almanac 1.5 lbs. Natural Tree and Shrub Fertilizer Spikes (6-Count TruSpikes) OFA-FS1333

#9

9. Osmocote Smart-Release Plant Food

• Weight: 2 lb
• Form: Granules

Best for: Long-interval mixed-plant feeding.

Why it ranks #9: This broad-use granular food contains 11 essential nutrients and feeds for up to six months, but it is not formulated specifically for crepe myrtles.

Feeding for up to six months is the defining convenience of Osmocote Smart-Release Plant Food Plus, which supplies 11 essential nutrients in granular form. Its listed use spans indoor and outdoor plants, including trees and shrubs, so it can cover crepe myrtles within a broader garden routine.

The resin-coated granules are described as smart-release, connecting the granular application to nutrition lasting up to six months. The listed directions call for one scoopful per two gallons of soil or four square feet, mixed into the top three inches and watered regularly. That measurement guidance supports use in containers, beds, and in-ground plantings, while the broad plant list suits gardeners feeding more than crepe myrtles. It is not presented as a crepe-myrtle-specific formula.

Skip it if you want a formula specifically labeled for crepe myrtles; Natures Wisdom Crepe Myrtle Tree Fertilizer is tailored to that plant.

This fits gardeners who want one granular product for crepe myrtles and a wider mix of indoor and outdoor plants, with feeding lasting up to six months. Choose a targeted formula if crepe-myrtle-specific labeling matters.

Listed on Amazon as: Osmocote Smart-Release Plant Food Plus Outdoor & Indoor1, 2 lb.

#10

10. Miracle-Gro All Purpose Plant Food

• Weight: 1.5 lb
• Form: Powder

Best for: Quick soluble all-purpose feeding.

Why it ranks #10: The 24-8-16 water-soluble formula feeds many plant types and works instantly, but it is a general-purpose option rather than a tree-specific food.

Instant action after mixing is the defining feature of Miracle-Gro Water Soluble All Purpose Plant Food, making it a quick-feed option for trees as well as many other plants. Its 24-8-16 formula is listed for indoor and outdoor use, from flowers and vegetables to houseplants.

The powder dissolves for application as a water-soluble feed, and the product information says it starts working instantly, which suits gardeners seeking a quick boost rather than a long-release schedule. Its broad plant list includes trees and both indoor and outdoor plants, so one formula can serve a mixed garden. The listing also states it will not burn plants when used as directed. Follow the package directions for the chosen application method and quantity.

Skip it if you prefer a granular product that feeds for up to six months; Osmocote Smart-Release Plant Food Plus lists that duration.

For gardeners who want a soluble quick boost for crepe myrtles alongside other plants, this offers a broad-use approach. Its all-purpose labeling may be less suitable when a crepe-myrtle-specific formula is the priority.

Listed on Amazon as: Miracle-Gro Water Soluble All Purpose Plant Food, 1.5 lb.