StoreDeal.ai store
Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • Use in AI assistants
  • Contact
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.·2222 Ponce de Leon Blvd, Miami, FL 33134·support@deal.ai
TermsPrivacy
Deal.ai › Miracle Gro › Plant Food & Fertilizers
Miracle Gro
Miracle-Gro 1 lb. Soluble Bloom Booster Flower
Miracle Gro

Miracle-Gro 1 lb. Soluble Bloom Booster Flower

Best price now

$7.99at Blain's Farm & FleetChecked 15 h ago

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

Visit Blain's Farm & Fleet

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Price facts

  • Last seen at $7.99 at Blain's Farm & Fleet on Nov 13.
  • Checked at 2 stores.

Our take on the Miracle-Gro 1 lb. Soluble Bloom Booster Flower

This is a water-soluble plant food with a 15-30-15 analysis: high phosphorus, moderate nitrogen and potassium, made to push flowering plants into more and bigger blooms. You mix it in a watering can or a hose-end feeder and apply every 7 to 14 days. It suits container and bedding flowers, hanging baskets and rose beds where bloom count matters more than leaf growth. Against all-purpose feeds like a 20-20-20, it trades some nitrogen for phosphorus, which is the point; against slow-release granular bloom feeds it needs more frequent mixing but acts faster.

Best forContainer and hanging-basket flowersRoses and bedding annuals in bloom seasonGardeners who already feed through a hose-end sprayerReviving heavy feeders mid-season
Pros
  • High phosphorus 15-30-15 ratio aimed at bloom production
  • Dissolves fully in water for even feeding
  • Works in a watering can or hose-end feeder
  • Feeds roughly 500 sq. ft. through a feeder in about 12 minutes
  • Applied every 7 to 14 days, so you can adjust to plant response
Cons
  • Needs measuring and mixing every application
  • Not a complete set-and-forget feed; slow-release granules last longer
  • High phosphorus can be wasted on phosphorus-rich soil
  • Easy to over-apply if the mixing rate is eyeballed

Miracle-Gro 1 lb. Soluble Bloom Booster Flower prices at every store

  • Blain's Farm & FleetNew

    In stock

    $7.99Checked 15 h ago
    Visit Blain's Farm & Fleet
  • Ace HardwareNew

    In stock

    $7.99+ $15.00 shippingChecked 15 h ago
    Visit Ace Hardware

Store links may earn us a commission. Some prices via Klarna.

Miracle-Gro 1 lb. Soluble Bloom Booster Flower price history

Lowest price we've seen: $7.99 on Nov 14 at Blain's Farm & Fleet. Tracked across 2 stores since Nov 14.

What reviewers say

Gardeners who use it on annuals, baskets and roses generally report more flowers and stronger color through the season. The common complaints are the mixing routine and the need to reapply often.

What people mention
  • Bloom productionPraisedUsers say flowering annuals and baskets produce more and larger blooms after regular feeding.
  • MixingMixedIt dissolves well, but measuring powder every week or two is a chore compared with granules.
  • Application rateCriticisedSome gardeners report burned or stressed plants when they mixed it stronger than the label rate.
  • VersatilityMixedGreat for flowers, but the high-phosphorus formula is a poor fit for leafy plants and lawns.

About the Miracle-Gro 1 lb. Soluble Bloom Booster Flower

This is a soluble bloom booster plant food for flowers. It has a 15-30-15 fertilizer analysis and is mixed with water before use.

It can be used on indoor and outdoor plants, with a different mixing rate for each. Indoors, mix 1/2 teaspoon per gallon of water. Outdoors, mix 1-1/2 tablespoons per 1-1/2 gallons of water. Apply every 7 to 14 days.

One container covers approximately 600 sq. ft. With a feeder, it covers 500 sq. ft. in approximately 12 minutes.

Type
Soluble bloom booster plant food for flowers
Analysis
15-30-15
Coverage
Approximately 600 sq. ft.
Application
Every 7-14 days
Indoor mixing
1/2 teaspoon per gallon of water
Outdoor mixing
1-1/2 tablespoons per 1-1/2 gallons of water
Feeder coverage
500 sq. ft. in approximately 12 minutes

Specifications

Fertilizer Analysis
15-30-15Source
Container Size
1.5 lb.Source
Coverage Area
approximately 600 sq. ft.Source
Application Interval
every 7-14 daysSource

Questions and answers

What is 15-30-15 good for?
It is a high-phosphorus formula for flowering plants. Use it on annuals, perennials, roses and hanging baskets when you want more blooms rather than more leaf growth.
How often should I apply it?
Every 7 to 14 days during the growing season. Feed more often for heavy bloomers in containers and less often for plants in rich soil.
Can I use it in a hose-end sprayer?
Yes. The label gives a feeder rate, and one feeder fill covers about 500 sq. ft. in roughly 12 minutes. Mix the jar concentrate according to the feeder instructions.
Is it safe for vegetables?
It is a general flower and garden plant food, but check the label for the crops it lists before using it on edibles, and keep to the stated rate.
How much does the jar cover?
About 600 sq. ft. when mixed for outdoor watering, or about 500 sq. ft. through a hose-end feeder.
Where is the Miracle-Gro 1 lb. Soluble Bloom Booster Flower cheapest?
At Blain's Farm & Fleet, for $7.99, as of our latest check.
Where can I buy the Miracle-Gro 1 lb. Soluble Bloom Booster Flower?
2 stores we checked sell it, including Blain's Farm & Fleet, Ace Hardware.

Shoppers also compared

  • M
    MasterBlend 4-18-38 Complete Combo Kit
    MasterBlend 4-18-38 Complete Combo Kit
  • J
    Jack's Nutrients Magnesium Sulfate Epsom Salts Water-Soluble Fertilizer, 25lbs
    Jack's Nutrients Magnesium Sulfate Epsom Salts Water-Soluble Fertilizer, 25lbs
  • S
    Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)
    Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)
  • G
    General Hydroponics MaxiGro
    General Hydroponics MaxiGro
  • E
    Epsom Salt (Magnesium Sulfate) - Agricultural Grade
    Epsom Salt (Magnesium Sulfate) - Agricultural Grade
  • A
    Alpha Chemicals Soluble Powder Synthetic Fertilizer, 5 lbs
    Alpha Chemicals Soluble Powder Synthetic Fertilizer, 5 lbs
  • G
    GH Flora Series 3-Part System
    GH Flora Series 3-Part System
  • P
    Pennington Epsom Salt Plant Food Fertilizer, 7 lb
    Pennington Epsom Salt Plant Food Fertilizer, 7 lb

Stores we've priced the Miracle-Gro 1 lb. Soluble Bloom Booster Flower at

  • Ace Hardware deals and prices
  • Blain's Farm & Fleet deals and prices

More from Miracle Gro

  • M
    Miracle Gro Liquid Plant Food Fertilizer 32oz
    Miracle Gro Liquid Plant Food Fertilizer 32oz
  • M
    Miracle-Gro Sphagnum Peat Moss, 8 qt.
    Miracle-Gro Sphagnum Peat Moss, 8 qt.
  • M
    Miracle-Gro 24 in. 23-Watt White LED Full Spectrum Plant Grow Light Fixture
Indoor Mixing Rate
1/2 teaspoon per gallon of waterSource
Outdoor Mixing Rate
1-1/2 tablespoons per 1-1/2 gallons of waterSource
Feeder Coverage
500 sq. ft. in approximately 12 minutesSource
Miracle-Gro 24 in. 23-Watt White LED Full Spectrum Plant Grow Light Fixture
  • M
    Miracle-Gro 24 in. 23-Watt LED Full Spectrum Plant Grow Light Fixture
    Miracle-Gro 24 in. 23-Watt LED Full Spectrum Plant Grow Light Fixture
  • M
    Miracle-Gro Water Soluble All Purpose Plant Food
    Miracle-Gro Water Soluble All Purpose Plant Food
  • M
    Miracle-Gro Citrus, Avocado & Mango Plant Food
    Miracle-Gro Citrus, Avocado & Mango Plant Food
  • M
    Miracle-Gro Fruit and Citrus Plant Food Spikes
    Miracle-Gro Fruit and Citrus Plant Food Spikes
  • M
    Miracle Gro Citrus, Avocado, Mango Plant Food
    Miracle Gro Citrus, Avocado, Mango Plant Food
  • All Miracle Gro deals and products →