Miracle-Gro Water Soluble Bloom Booster Flower Food
Best bloom booster for gardeners wanting vibrant, fast-growing flowers.
Enhance your garden's vibrancy with Miracle-Gro Water Soluble Bloom Booster Flower Food. This specially formulated plant food is rich in phosphorus, promoting abundant blooms and vivid colors for both indoor and outdoor plants. Its fast-acting formula delivers visible results quickly, making it ideal for annuals and perennials. Easily apply with a watering can or the Miracle-Gro Garden Feeder. Safe for plants when used as directed, it ensures your flowers thrive throughout the spring and summer seasons.
$16.99
Owner Satisfaction
4.6
/ 5
Category Rank
1939
/ 4425
#1939 in Fertilizers
Price vs Category Average
-72%
Below average
Fertilizer Source
Synthetic
/ Synthetic
Who it's for
- Gardeners seeking vibrant, high-yield flower and fruit production
- Impatient growers wanting to see visible results quickly
- Beginners needing an easy-to-find and simple application method
Who should skip it
- Novice gardeners prone to over-fertilizing their delicate plants
- Organic enthusiasts prioritizing long-term soil health and structure
- Container gardeners worried about salt buildup in small pots
Performance breakdown
Bloom stimulation
High phosphorus content drives aggressive flower production and color intensity.
Application versatility
Seamlessly transitions between watering cans and dedicated garden feeders.
Nutrient uptake speed
Quick-release formula ensures plants receive immediate nourishment for rapid growth.
Ease of mixing
Water-soluble powder dissolves instantly without leaving messy residue behind.
Coverage efficiency
One pound provides substantial reach for standard residential flower beds.
Maintenance frequency
Requires bi-weekly attention to maintain peak floral performance throughout summer.
Key Specs
Fertilizer Source
Synthetic
Coverage Area
500 sq. ft. (with feeder)
Application Method
Watering can or Miracle-Gro Garden Feeder
Organic Certified
False
Season of Application
Spring, Summer
Container Weight
1.0 lb
Water Soluble
True
Target Plant Type
Flowers, Houseplants
Features
- Boosts vibrant color and bloom yield
- Works instantly for rapid results
- Versatile watering can or feeder application
- Ideal for containers and window boxes
- Safe for annuals and perennials
- High phosphorus formula
- Water-soluble for easy application
What customers say
Customers overwhelmingly praise this water-soluble fertilizer for its exceptional effectiveness in boosting floral output. The core theme is rapid, visible results, with many reporting significantly larger, more vibrant blooms quickly after application. Gardeners value how easily the product mixes and applies, contributing to its high perceived quality. While a few users noted potential issues with overapplication, the consensus confirms that the dramatic transformation of plants into prolific bloomers offers outstanding value. This solution is considered a staple for achieving professional looking flower displays.
Know before you buy
For the best results, you should apply the fertilizer every 7 to 14 days throughout the spring and summer growing seasons.
Yes, this formula is safe for both indoor and outdoor plants. When using it indoors, mix 1/2 teaspoon of the powder per gallon of water.
For outdoor plants, mix 1 tablespoon of the water-soluble powder into 1 gallon of water. You can apply this mixture using a standard watering can or a Miracle-Gro Garden Feeder.
No, this is a synthetic, quick-release fertilizer. It is specifically formulated with high levels of phosphorus to encourage rapid bloom development.
Because this is a fast-acting, water-soluble formula, it works instantly to provide nutrients to your plants, leading to visible results more quickly than slow-release alternatives.
Yes, this Bloom Booster is designed to be safe and effective for both annuals and perennials, helping to increase bloom yield and color vibrancy for both plant types.
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