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20 Best Fertilizer For Crepe Myrtles (2023 Updated)

Fertilizer is a material that is applied to plants to provide them with essential nutrients that they are unable to obtain from the soil. Crepe myrtles are a type of flowering tree that is native to Asia.

They are commonly grown in the southern United States and are known for their beautiful flowers. While crepe myrtles do not require a lot of fertilizer, applying it can help to promote growth and flowering.

The best time to apply fertilizer to crepe myrtles is in the spring, just before new growth begins.

20 Best Fertilizer For Crepe Myrtles

Product Image Product Name Features Price

Miracle-Gro Bloom Booster Flower Food, Water Soluble – 1.5 lb box

  • 1 lb.

Scotts Super Bloom Water Soluble Plant Food, 2 lb – NPK 12-55-6 – Fertilizer for Outdoor Flowers, Fruiting Plants, Containers and Bed Areas – Feeds

  • Contains high phosphorus to help plants bloom
  • Feed every 1-2 weeks for best results
  • Water-soluble plant food feeds plants instantly

Miracle-Gro LiquaFeed Flowering Trees & Shrubs Plant Food

  • Contains iron to help prevent yellowing leaves.
  • For use with a LiquaFeed Feeder.
  • Bottle of premeasured plant food automatically mixes the right amount of nutrients to take the guesswork out of feeding.

Miracle Gro Orchid Food, Water Soluble – 8 oz

  • Plant Food, 8 oz

Shake 'n Feed Flowering Trees and Shrubs Plant Food

  • Contains natural ingredients to feed the microbes in the soil
  • For use on all flowering trees, shrubs and other acid-loving plants

Dr. Earth Fruit Tree Fertilizer, Premium – 4 lbs (1.814 kg)

  • 4 lb Bag

Jobe's Tree and Shrub Fertilizer Spikes – 15 pack

  • Feeds for 60 days
  • Feed at the root level where plants need it most
  • Spike design prevents nutrients from washing away

MiracleGro Plant Food Spikes, Tree & Shrub – 12 spikes, 3 lb

  • Promotes vibrant color and lush foliage
  • Contains natural ingredients
  • Feed once per season in spring and fall

MaxSea All Purpose Plant Food (16-16-16) 1.5 lb

  • Maxsea All Purpose Plant Food is designed for year round use on all plants, indoors and outdoors
  • A full spectrum of important secondary elements and micronutrients provide sulfur, boron, copper, iron, manganese, molybdenum and zinc

Miracle-Gro 3 lb Spring Ahead Plant Food

  • Keep your plants fed for up to 6 months with a single application of Miracle-Gro Spring Ahead plant food
  • Gets to work instantly (once watered in)

Jobe's Trees and Shrubs Fertilizer Spikes – 9 pack

  • Ensures a continuous supply of nutrients below the surface for your evergreens.
  • Fertilizer Spikes feed at the roots, and have a slow release formula to last all season.

Grow More 1.25 lbs Orchid Food 6-30-30 5120

  • Orchid food
  • Must be dissolved in water before use
  • Premium quality

Milorganite Slow-Release Nitrogen Lawn Fertilizer, 32 Lb

  • Organic composition
  • Reduces the need for watering
  • Cuts down mowing time

Miracle-Gro Performance Organics Granules All Purpose Plant Food 2.5 lb

  • Shaker jug makes feeding in-ground and container plants easy
  • In as little as 7 days, you will see results (compared to unfed plants)

MiracleGro Plant Food, Tomato, 1.5 lb

  • 1.5 lb

Miracle-Gro Shake 'N Feed Flowering Trees & Shrubs Plant Food | 8 lbs

  • Contains natural ingredients to feed the microbes in the soil
  • For use on all flowering trees, shrubs and other acid-loving plants

Beastie Bloomz Heavyweight Blossom Builder Soluble Fertilizer, 1 LBS

  • 1 lb
Miracle-Gro Bloom Booster Flower Food, Water Soluble – 1.5 lb box
  • 1 lb.
Scotts Super Bloom Water Soluble Plant Food, 2 lb – NPK 12-55-6 – Fertilizer for Outdoor Flowers, Fruiting Plants, Containers and Bed Areas – Feeds
  • Contains high phosphorus to help plants bloom
  • Feed every 1-2 weeks for best results
  • Water-soluble plant food feeds plants instantly
Miracle-Gro LiquaFeed Flowering Trees & Shrubs Plant Food
  • Contains iron to help prevent yellowing leaves.
  • For use with a LiquaFeed Feeder.
  • Bottle of premeasured plant food automatically mixes the right amount of nutrients to take the guesswork out of feeding.
Miracle Gro Orchid Food, Water Soluble – 8 oz
  • Plant Food, 8 oz
Shake 'n Feed Flowering Trees and Shrubs Plant Food
  • Contains natural ingredients to feed the microbes in the soil
  • For use on all flowering trees, shrubs and other acid-loving plants
Dr. Earth Fruit Tree Fertilizer, Premium – 4 lbs (1.814 kg)
  • 4 lb Bag
Jobe's Tree and Shrub Fertilizer Spikes – 15 pack
  • Feeds for 60 days
  • Feed at the root level where plants need it most
  • Spike design prevents nutrients from washing away
MiracleGro Plant Food Spikes, Tree & Shrub – 12 spikes, 3 lb
  • Promotes vibrant color and lush foliage
  • Contains natural ingredients
  • Feed once per season in spring and fall
MaxSea All Purpose Plant Food (16-16-16) 1.5 lb
  • Maxsea All Purpose Plant Food is designed for year round use on all plants, indoors and outdoors
  • A full spectrum of important secondary elements and micronutrients provide sulfur, boron, copper, iron, manganese, molybdenum and zinc
Miracle-Gro 3 lb Spring Ahead Plant Food
  • Keep your plants fed for up to 6 months with a single application of Miracle-Gro Spring Ahead plant food
  • Gets to work instantly (once watered in)
Jobe's Trees and Shrubs Fertilizer Spikes – 9 pack
  • Ensures a continuous supply of nutrients below the surface for your evergreens.
  • Fertilizer Spikes feed at the roots, and have a slow release formula to last all season.
Grow More 1.25 lbs Orchid Food 6-30-30 5120
  • Orchid food
  • Must be dissolved in water before use
  • Premium quality
Milorganite Slow-Release Nitrogen Lawn Fertilizer, 32 Lb
  • Organic composition
  • Reduces the need for watering
  • Cuts down mowing time
Miracle-Gro Performance Organics Granules All Purpose Plant Food 2.5 lb
  • Shaker jug makes feeding in-ground and container plants easy
  • In as little as 7 days, you will see results (compared to unfed plants)
MiracleGro Plant Food, Tomato, 1.5 lb
  • 1.5 lb
Miracle-Gro Shake 'N Feed Flowering Trees & Shrubs Plant Food | 8 lbs
  • Contains natural ingredients to feed the microbes in the soil
  • For use on all flowering trees, shrubs and other acid-loving plants
Beastie Bloomz Heavyweight Blossom Builder Soluble Fertilizer, 1 LBS
  • 1 lb

1. Miracle-Gro Bloom Booster Flower Food, Water Soluble – 1.5 lb box

Miracle-Gro Bloom Booster Flower Food, Water Soluble - 1.5 lb box

  • 1 lb.

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Units in Package 1
Unit Size 1.5 lb
Directions Directions for Use with Watering Cans: Indoor Plants: Mix 1/2 teaspoon (the small end of the enclosed scoop) per gallon of water every 2 weeks. Outdoor Plants: Mix 1-1/2 tablespoons (the large end of the enclosed scoop) per 1-1/2 gallons of water, in a watering can. For best results, soak the soil at the base of plants every 7 to 14 days. With Miracle-Gro Garden Feeder: For larger outdoor gardens, fill the feeder jar to the top of the label. See feeder package for additional instructions. For best results, use every 7 to 14 days; just soak the soil at the base of each plant to fertilize the roots. 1-1/2 lbs feeds approximately 600 square feet of garden area. Please use only as directed. For Big, Beautiful Miracle-Gro Results: Plants need water; sunlight; nutrition. Plants need water, sunlight and nutrition to flourish throughout the season. For best results, feed ever 7-14 days when plants are actively growing. Plant it Right: Great soil is the first step for a beautiful, thriving garden. Miracle-Gro soil helps create the right environment to get your plants off to a great start. Feed it Right: For spectacular results, thirty days after planting in Miracle-Gro soil, begin feeding regularly with Miracle-Gro Water Soluble Bloom Booster Flower Food to keep plants growing vigorously. If planting in existing soil, feed at planting time to help plants become established.
Ingredients Miracle-Gro Water Soluble Bloom Booster Flower Food 15-30-15: Guaranteed Analysis F1198: Total Nitrogen (N) (15%), Ammoniacal Nitrogen (5.8%), Urea Nitrogen (9.2%), Available Phosphate (P205) (30%), Soluble Potash (K20) (15%), Boron (B) (0.02%), Copper (Cu) (0.07%), Water Soluble Cooper (Cu) (0.07%), Iron (Fe) (0.15%), 0.15% Chelated Iron (Fe), Manganese (Mn) (0.05%), Chelated Manganese (Mn) (0.05%), Molybdenum (Mo) (0.0005%), Zinc (Zn) (0.06%), Water Soluble Zinc (Zn) (0.06%). Derived from Urea, Ammonium Phosphate, Urea Phosphate, Potassium Chloride, Boric Acid, Copper Sulfate, Iron EDTA, Manganese EDTA, Sodium Molybdate, and Zinc Sulfate.
Warnings Keep out of reach of children.

2. Scotts Super Bloom Water Soluble Plant Food, 2 lb – NPK 12-55-6 – Fertilizer for Outdoor Flowers, Fruiting Plants, Containers and Bed Areas – Feeds

Scotts Super Bloom Water Soluble Plant Food, 2 lb - NPK 12-55-6 - Fertilizer for Outdoor Flowers, Fruiting Plants, Containers and Bed Areas - Feeds

  • Contains high phosphorus to help plants bloom
  • Feed every 1-2 weeks for best results
  • Water-soluble plant food feeds plants instantly
  • For outdoor flowers, fruiting plants, containers and bed areas
  • Won’t burn your plants when used as directed

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Details
Product Dimensions 3.5 x 3.5 x 8.3 inches
Country of Origin USA
Is Discontinued By Manufacturer No

3. Miracle-Gro LiquaFeed Flowering Trees & Shrubs Plant Food

Miracle-Gro LiquaFeed Flowering Trees & Shrubs Plant Food

  • Contains iron to help prevent yellowing leaves.
  • For use with a LiquaFeed Feeder.
  • Bottle of premeasured plant food automatically mixes the right amount of nutrients to take the guesswork out of feeding.
  • Now feeding your acid-loving plants is as easy as watering.

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Product Type Plant Food
Product Form Liquid
Fertilizer Analysis (N-P-K) 9-3-3
Coverage Area 400 sq. feet/bottle
Concentrated Yes

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Rubydoo

4. Miracle Gro Orchid Food, Water Soluble – 8 oz

Miracle Gro Orchid Food, Water Soluble - 8 oz

  • Plant Food, 8 oz

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Units in Package 1
Unit Size 8 oz
Directions Directions for Use: For orchids and other indoor acid-loving plants, mix 1/4 teaspoon of Miracle-Gro Water Soluble Orchid Food for every gallon of water and apply every 2 weeks during active growth periods; every 4 weeks during rest periods. Water early in the day to allow time for the plants to dry. Water the container surface and roots only – not the foliage. Allow water to run through your potting mix during watering. For Big, Beautiful Miracle-Gro Results: Plant it Right: For best results when repotting your orchid, use a specially formulated potting mix such as Miracle-Gro Orchid Potting Mix. Feed it Right: For deep rich leaf color, beautiful blooms and strong root development feed with Miracle-Gro Water Soluble Orchid Food. Can Also Be Used on Outdoor Plants: Mix 1 tablespoon per gallon of water and apply over soil. Apply every 2 weeks to help promote bigger, more beautiful plants (vs unfed plants).
Ingredients Miracle-Gro Water Soluble Orchid Food 30-10-10: Guaranteed Analysis: Total Nitrogen (N) (30%), Ammoniacal Nitrogen (3.0%), Urea Nitrogen (27.0%), Available Phosphate (P205) (10%), Soluble Potash (K20) (10%), Boron (B) (0.02%), Copper (Cu) (0.07%), Chelated Copper (Cu) (0.07%), Iron Fe) (0.325%), Chelated Iron (Fe) (0.325%), Manganese (Mn) (0.05%), Chelated Manganese (0.055), Molybdenum (Mo) (0.0005%), Zinc (Zn) (0.07%), Chelated Zinc (Zn) (0.07%). Derived from Ammonium Phosphate, Urea, Potassium Phosphate, Potassium Chloride, Boric Acid, Copper EDTA, Iron EDTA, Manganese EDTA, Sodium Molybdate, and Zinc EDTA.
Warnings Keep out of reach of children.

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Good Yul!

5. Shake ‘n Feed Flowering Trees and Shrubs Plant Food

Shake 'n Feed Flowering Trees and Shrubs Plant Food

  • Contains natural ingredients to feed the microbes in the soil
  • For use on all flowering trees, shrubs and other acid-loving plants
  • Helps maintain Deep, lush Green foliage and colorful blooms throughout the season
  • Gets plants off to a good start and provides continuous release feeding for up to 3 months for beautiful trees and shrubs all Season Long
  • Conveniently can be used on plants, both in ground and in containers

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Details
Product Dimensions 4.25 x 13.5 x 7 inches
Country of Origin USA
Is Discontinued By Manufacturer No

6. Dr. Earth Fruit Tree Fertilizer, Premium – 4 lbs (1.814 kg)

Dr. Earth Fruit Tree Fertilizer, Premium - 4 lbs (1.814 kg)

  • 4 lb Bag

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Units in Package 1
Unit Size 4 lb
Directions Citrus & Avocado: New Plantings: Before you plant, add 2 cups (approx. 1 lb) per 1/2 cubic foot (approx. 5 gallons) of soil that will be added to the planting hole. Once planting is completed, water thoroughly. Established Plants: Use 1 cup (approx. 1/2 lb) for every inch of trunk diameter (measured at 4 inches – 6 inches above the soil line). Work into the soil gently inside of the drip line. Water thoroughly. When to Apply: Every 3 months throughout the growing season. Fruit & Nut Trees: New Plantings: Before you plant, add 2-1/2 cups (approx. 1-1.4 lbs) per 1/2 cubic foot (approx. 5 gallons) of soil that will be added to the planting hole. Once planting is completed, water thoroughly. Established Plants: Use 1 cup (approx. 1/2 lb) for every inch of trunk diameter (measured at 4 inches – 6 inches above the soil line). Work into the soil gently inside of the drip line. Water thoroughly. When to Apply: Every 3 months throughout the growing season. Fruit Vines & Berries: New Plantings: Before you plant, add 3 cups (approx. 1-1/2 lbs) per 1/2 cubic foot (approx 5 gallons) of soil that will be added to the planting hole. Once planting is completed, water thoroughly. Established Plants: Use 2 cups (approx. 1 lb) for every inch of trunk diameter (measured at 4 inches – 6 inches above the soil line). Work into the soil gently inside of the drip line. Water thoroughly. When to Apply: Every 2 months throughout the growing season. Fertilizer Tea: For a rich liquid mixture of Dr. Earth’s Natural Wonder, mix 2 pounds, or 5 cups for every 5 gallons of water. Let the mixture set for 24 hours. Strain well and mulch all the solids around the root zone. The liquid portion (tea) can be applied at 1 to 2 cups for shrubs, or 2 to 4 cups for larger plants. Use full strength to foliar feed & for deep root feeding of all plants. Store in a dry cool place. Avoid direct sunlight.
Ingredients ., Also Contains Non-Plant Food Ingredients: Bacillus Amyloliquefaciens (3,500,000 Colony Forming Units [CFU]/Gram), Bacillus Licheniformis (3,500,000 Colony Forming Units [CFU]/Gram), Bacillus Megaterium (1,250,000 Colony Forming Units [CFU]/Gram), Bacillus Pumilus (1,250,000 Colony Forming Units [CFU]/Gram), Bacillus Subtilis (1,250,000 Colony Forming Units [CFU]/Gram). Mycorrhizae: Endomycorrhizae (VAM): Glomus Aggregatum (0.16 Propagules/Gram), Glomus Clarum (0.16 Propagules/Gram), Glomus Deserticola (0.16 Propagules/Gram), Glomus Etunicatum (0.16 Propagules/Gram), Glomus Intraradices (0.16 Propagules/Gram), Glomus Mosseae (0.16 Propagules/Gram), Glomus Monosporum (0.16 Propagules/Gram), Paraglomus Brasillianum (0.16 Propagules/Gram), Gigaspora Margarita (0.16 Propagules/Gram). Ectomycorrhizae: Laccaria Laccata (37.12 Propagules/Gram), Laccaria Bicolor (37.12 Propagules/Gram), Pisolithus Tinctorius (1,485 Propagules/Gram), Rhizopogon Villosullus (37.12 Propagules/Gram), Rhizopogon Luteolus (37.12 Propagules/Gram), Rhizopogon Amylopogon (37.12 Propagules/Gram), Rhizopogon Fulvigleba (37.12 Propagules/Gram), Scleroderma Cepa (74.25 Propagules/Gram), Scleroderma Citrinum (74.25 Propagules/Gram).
Warnings Cancer – www.P65Warnings.ca.gov.

7. Jobe’s Tree and Shrub Fertilizer Spikes – 15 pack

Jobe's Tree and Shrub Fertilizer Spikes - 15 pack

  • Feeds for 60 days
  • Feed at the root level where plants need it most
  • Spike design prevents nutrients from washing away
  • Easy to use

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Weight 5.05 oz

8. MiracleGro Plant Food Spikes, Tree & Shrub – 12 spikes, 3 lb

MiracleGro Plant Food Spikes, Tree & Shrub - 12 spikes, 3 lb

  • Promotes vibrant color and lush foliage
  • Contains natural ingredients
  • Feed once per season in spring and fall

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Units in Package 12
Total Size 3 lb
Directions Directions for Use: Apply once in early Spring and once in mid-Fall when the ground is soft and moist. If the ground is dry, wet before driving spikes. Apply only as directed. Place enclosed plastic cap on top of spike. Drive spike into the ground around tree or shrub following the drip line as illustrated. Spikes should at least be 3 feet fall apart. For small trees and shrubs with drip line closer than 2 feet, insert spikes 2 feet away from center and save for future use. Continue to drive spike 2 inches below the soil surface. How many should I use? Use the diameter of the drip line of the tree or shrub as a guide to determine the number of spikes needed per plant. Drip Line Diameter: 4 Feet: 1 spike. 6 Feet: 3 spikes. 8 Feet: 5 spikes. 10 Feet: 7 spikes. 12 Feet: 10 spikes. 15 Feet: 16 spikes. Store unused spikes in a dry place, ideally in a sealed plastic bag. Keep original bag for future reference.
Ingredients Guaranteed Analysis: Total Nitrogen (N) (15%): Ammoniacal Nitrogen (14.8%), Water Insoluble Nitrogen (0.2%), Available Phosphate (P2O5) (5.0%), Soluble Potash (K2O) (10.0%), Sulfur (S) (16.0%): Combined Sulfur (S) (16.0%), Iron (Fe) (0.1%), Manganese (Mn) (0.05%): Water Soluble Manganese (Mn) (0.05%). Derived from: Ammonium Phosphate, Feather Meal, Bone Meal, Ammonium Phosphate, Potassium Chloride, Sulfate of Potash, Magnetic Rock, Manganese Sulfate.
Warnings Keep out of reach of children.

9. MaxSea All Purpose Plant Food (16-16-16) 1.5 lb

MaxSea All Purpose Plant Food (16-16-16) 1.5 lb

  • Maxsea All Purpose Plant Food is designed for year round use on all plants, indoors and outdoors
  • A full spectrum of important secondary elements and micronutrients provide sulfur, boron, copper, iron, manganese, molybdenum and zinc
  • The seaweed granules in Maxsea contain over 60 recognized elements all found to be beneficial to plants
  • Comprised of primary plant foods nitrogen, phosphorus and potassium

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Weight 1.7 oz

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10. Miracle-Gro 3 lb Spring Ahead Plant Food

Miracle-Gro 3 lb Spring Ahead Plant Food

  • Keep your plants fed for up to 6 months with a single application of Miracle-Gro Spring Ahead plant food
  • Gets to work instantly (once watered in)
  • Formulated to fertilize all plants, including flowers and vegetables
  • Apply anywhere – indoor or outdoor containers, in-ground gardens, raised beds, or on top of freshly-mulched areas
  • Guaranteed not to burn, when used as directed

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Nitrogen (N) Content (Percentage) 15
Phosphorus Content (Percentage) 5
Lowe’s Exclusive No
Natural No
OMRI Listed No

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Luis
Gina

11. Jobe’s Trees and Shrubs Fertilizer Spikes – 9 pack

Jobe's Trees and Shrubs Fertilizer Spikes - 9 pack

  • Ensures a continuous supply of nutrients below the surface for your evergreens.
  • Fertilizer Spikes feed at the roots, and have a slow release formula to last all season.
  • Spikes are easy to use, no mixing or measuring.
  • No wasteful runoff, mess, hazards or smells.
  • Convenient and easy to use.

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Applicator Included Yes
Feed Duration Up to 2 months
Concentrated No
Nitrogen (N) Content (Percentage) 15
Application Type Spikes

12. Grow More 1.25 lbs Orchid Food 6-30-30 5120

Grow More 1.25 lbs Orchid Food 6-30-30 5120

  • Orchid food
  • Must be dissolved in water before use
  • Premium quality
  • Bloom formula
  • High phosphorus to nitrogen ration

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Weight 1.4 oz

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13. Milorganite Slow-Release Nitrogen Lawn Fertilizer, 32 Lb

Milorganite Slow-Release Nitrogen Lawn Fertilizer, 32 Lb

  • Organic composition
  • Reduces the need for watering
  • Cuts down mowing time
  • Used on golf courses for decades

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Product Type Lawn Fertilizer
Organic Yes
Grass Type All Grasses
Fertilizer Analysis (N-P-K) 06-04-00
Application Conditions Dry
Product Type Slow-Release Nitrogen Fertilizer
Coverage Area 2500 sq. ft.
Container Size 32 lb.
Grass Type All Grass Types
Water Soluble No
Product Form Granules
Suitable for Vegetables Yes
Application Season All Seasons
Primary Usage Slow Release Nitrogen
Brand Name Milorganite

14. Miracle-Gro Performance Organics Granules All Purpose Plant Food 2.5 lb

Miracle-Gro Performance Organics Granules All Purpose Plant Food 2.5 lb

  • Shaker jug makes feeding in-ground and container plants easy
  • In as little as 7 days, you will see results (compared to unfed plants)
  • Enjoy Miracle-Gro results with organic, all-natural ingredients
  • Reapply every 4-6 weeks and water regularly for best results

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Brand Name Miracle-Gro
Product Form Granules
Fertilizer Analysis (N-P-K) 9-2-7
Container Size 2.5 lb
Coverage Area 240 sq ft
Organic Yes
Product Type Plant Food
Plant Type All-Purpose
Concentrated No

15. MiracleGro Plant Food, Tomato, 1.5 lb

MiracleGro Plant Food, Tomato, 1.5 lb

  • 1.5 lb

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Units in Package 1
Unit Size 1.5 lb
Directions Directions for Use: With Watering Cans: Mix 1-1/2 tablespoons (the large end of the enclosed scoop) per 1-1/2 gallons of water, in a watering can. For best results, soak the soil at the base of plants every 7 to 14 days. With Miracle-Gro Garden Feeder: For larger outdoor gardens, fill the feeder jar to the top of the label. See feeder package for additional instructions. For best results, use every 7 to 14 days; just soak the soil at the base of each plant to fertilize the roots. 1-1/2 lb feeds approximately 600 square feet of garden area. Please use only as directed. For All Vegetables: Miracle-Gro Water Soluble Tomato Plant Food is great for use on all types of vegetables. When starting from seed, wet the seedbed but don’t soak it. Once seedlings are well established, feed at normal recommended rates. For Big, Beautiful Miracle-Gro Results: Plants Need: water; sunlight; nutrition. Plants need water, sunlight and nutrition to flourish throughout the season. For best results, feed every 7-14 days when plants are actively growing. Plant it Right: Great soil is the first step for a beautiful, thriving garden. Miracle-Gro soil helps create the right environment to get your plants off to a great start. Feed it Right: For spectacular results, thirty days after planting in Miracle-Gro soil, begin feeding regularly with Miracle-Gro Water Soluble Tomato Plant Food to keep plants growing vigorously. If planting in existing soil, feed at planting time to help plants become established.
Ingredients Guaranteed Analysis: Total Nitrogen (N) (18%), Ammoniacal Nitrogen (1.4%), Urea Nitrogen (14.0%), Nitrate Nitrogen (2.6%), Available Phosphate (P2O5) (18%), Soluble Potash (K2O) (21%), Magnesium (Mg) (0.050%), Water Soluble Magnesium (Mg) (0.50%), Copper (Cu) (0.05%), Water Soluble Copper (Cu) (0.05%), Iron (Fe) (0.10%), Chelated Iron (Fe) 0.10%, Manganese (Mn) (0.05%), Chelated Manganese (Mn) (0.05%), Zinc (Zn) (0.05%), Water Soluble Zinc (Zn) (0.05%). Derived from Ammonium Sulfate, Potassium Nitrate, Urea, Potassium Phosphate, Magnesium Sulfate, Copper Sulfate, Iron EDTA, Manganese EDTA, and Zinc Sulfate.
Warnings Keep out of reach of children.

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16. Miracle-Gro Shake ‘N Feed Flowering Trees & Shrubs Plant Food | 8 lbs

Miracle-Gro Shake 'N Feed Flowering Trees & Shrubs Plant Food | 8 lbs

  • Contains natural ingredients to feed the microbes in the soil
  • For use on all flowering trees, shrubs and other acid-loving plants
  • Helps maintain Deep, lush Green foliage and colorful blooms throughout the season
  • Gets plants off to a good start and provides continuous release feeding for up to 3 months for beautiful trees and shrubs all Season Long
  • Conveniently can be used on plants, both in ground and in containers

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Analysis 18-6-12.

17. Miracle Gro Tree & Shrubs Feed, 8 lbs

 Miracle Gro Tree & Shrubs Feed, 8 lbs

  • For use on all flowering trees, shrubs and other acid-loving plants
  • Iron helps prevent leaf yellowing (commonly associated with iron deficiency)
  • Helps maintain deep, lush green foliage and colorful blooms throughout the season
  • Feeds up to 3 months

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Nitrogen (N) Content (Percentage) 18.0
Organic No
Phosphorus Content (Percentage) 6.0
Application Type Granules
Feed Duration Up to 3 months

18. Miracle-Gro Water Soluble 4.25 lb. All Purpose Plant Food (24-8-16)4.54,2544.5 out of 5 stars. 4,254 product reviews.

Miracle-Gro Water Soluble 4.25 lb. All Purpose Plant Food (24-8-16)4.54,2544.5 out of 5 stars. 4,254 product reviews.

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Details
NPK Ratio 24-8-16
Organic Synthetic
Plant Type Flower
Active Ingredients NPK
Compatible Grass Type All Purpose

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19. Beastie Bloomz Heavyweight Blossom Builder Soluble Fertilizer, 1 LBS

Beastie Bloomz Heavyweight Blossom Builder Soluble Fertilizer, 1 LBS

  • 1 lb

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Product Type Soluble Fertilizer
Container Size 1 lb.
Organic Yes
Fertilizer Analysis 0-50-30
Brand Name FoxFarm

20. Root Crops Alive! Root Crop Fertilizer – 5 lb Bag

Root Crops Alive! Root Crop Fertilizer - 5 lb Bag

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Season both Spring & Fall

Conclusion

The best fertilizer for crepe myrtles is a slow-release fertilizer that contains nitrogen, phosphorus, and potassium. Apply the fertilizer in early spring before new growth begins.

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