Jack's Classic 10-30-20 Blossom Booster Water-Soluble Fertilizer
Best bloom enhancer for gardeners seeking vibrant floral displays.
This water-soluble fertilizer from Jack's Classic is designed to enhance the color and quantity of blooms in flowering plants. With an NPK ratio of 10-30-20, it provides a targeted nutrient profile to support robust flowering. The formula includes micronutrients to further boost plant health and bloom development. It is a synthetic fertilizer, easily dissolved in water for convenient application. This product is ideal for gardeners looking to maximize the visual appeal of their flowering plants.
$35.95
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Owner Satisfaction
4.6
/ 5
Category Rank
1939
/ 4425
#1939 in Fertilizers
Price vs Category Average
-42%
Below average
NPK Ratio
103020
/ --
Who it's for
- Gardeners seeking vibrant flowers and increased fruit yields
- Busy gardeners desiring fast results and easy application
- Home gardeners cultivating diverse flowering and fruiting plants
Who should skip it
- Gardeners needing a fertilizer for young plants or vegetative stages
- Novice users who might struggle with precise mixing ratios
- Gardeners preferring low-maintenance, long-lasting feeding solutions
Performance breakdown
Bloom stimulation
High phosphorus content drives exceptional flower production and color intensity.
Dissolution speed
Fine powder dissolves rapidly in water without leaving messy residue behind.
Nutrient balance
Targeted 10-30-20 ratio provides the precise fuel flowering plants crave.
Application versatility
Works seamlessly with watering cans or hose-end sprayers for easy feeding.
Micronutrient density
Essential trace elements bridge the gap for complete, long-term plant health.
Storage convenience
Compact four-pound container fits easily on most garden shed shelves.
Key Specs
NPK Ratio
10-30-20
Form
Water-Soluble
Package Weight
4 lbs
Includes Micronutrients
Fertilizer Type
Blossom Booster
Features
- Enhances bloom color and quantity
- Water-soluble for easy application
- Contains essential micronutrients
- Targeted NPK ratio for flowering plants
What customers say
Customers consistently praise this blossom booster for its remarkable effectiveness and ease of use. Many gardeners report significant improvements in bloom production, with more vibrant and abundant flowers across various plant types. Its water soluble nature makes application straightforward, dissolving quickly without residue. Users appreciate the reliable results, often noting a visible difference in plant health and flowering within a short period. The product is widely considered a dependable solution for encouraging lush, prolific blooms, making it a favorite among those seeking enhanced floral displays. This consistent performance underscores its strong reputation.
Know before you buy
The NPK ratio represents the percentage of nitrogen, phosphorus, and potassium. The high middle number (30) indicates a high phosphorus content, which is specifically formulated to stimulate bud formation and support more vibrant, abundant blooms.
This formula is specifically designed for flowering plants. While it won't necessarily harm foliage-heavy plants, it is best reserved for annuals, perennials, and shrubs where you want to prioritize flower production over leafy growth.
For best results, dissolve the fertilizer in water according to the package instructions and apply it to your plants every 7 to 14 days during the active growing season. Always ensure the soil is moist before application to prevent root burn.
Yes, it includes a balanced blend of essential micronutrients. These trace elements are vital for overall plant health and help ensure the plant has the necessary resources to support the energy-intensive process of heavy blooming.
Yes, because it is a water-soluble powder, it dissolves completely and is compatible with most standard hose-end sprayers or watering cans. Just be sure to mix it thoroughly with water before application to ensure an even distribution of nutrients.
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