Jack's Classic Bloom Booster 10-30-20
Best for gardeners seeking enhanced flowering and robust plant growth.
Jack's Classic Bloom Booster 10-30-20 is a professional-grade fertilizer designed to enhance flower production and color vibrancy in all your indoor and outdoor plants. Its proven 1:3:2 nutrient ratio is trusted by professional growers for its unmatched quality and effectiveness. This formula feeds plants through both their roots and leaves, ensuring optimal nutrient uptake. It's ideal for flowering plants like geraniums, impatiens, begonias, and marigolds, and also works wonders for vegetables and fruits. Additionally, it can be used as a transplant solution to give new plants a strong start.
$19.99
More Blossom Booster Options
Owner Satisfaction
4.6
/ 5
Category Rank
1939
/ 4425
#1939 in Fertilizers
Price vs Category Average
-68%
Below average
NPK Ratio
103020
/ --
Who it's for
- Gardeners aiming for maximum floral display and fruit yield
- Growers seeking quick results and efficient nutrient delivery to plants
- Plant enthusiasts desiring robust plant health alongside impressive flowering
Who should skip it
- Novice gardeners unfamiliar with precise fertilizer application rates
- Individuals needing an all-purpose fertilizer for various plant life cycles
- Environmentally conscious gardeners concerned about nutrient runoff
Performance breakdown
Bloom Stimulation
The high phosphorus ratio triggers prolific flowering in diverse plant species.
Nutrient Absorption
Dual-action delivery ensures plants intake nutrients through roots and foliage efficiently.
Versatility
Equally effective for ornamental flowers, vegetable gardens, and transplant shock recovery.
Solubility
Dissolves rapidly in water for consistent, clog-free application in sprayers.
Professional Reliability
A trusted industry standard used by commercial growers for predictable results.
Color Vibrancy
Optimized nutrient balance significantly enhances pigment intensity in petals and leaves.
Key Specs
NPK Ratio
10-30-20
Package Weight
1.5 lb
Fertilizer Form
Water Soluble
Application Method
Foliar, Root Feed
Intended Use
Indoor Plants, Outdoor Plants
Target Plant Type
Flowers, Vegetables
Primary Benefit
More Flowers, Brighter Colors
Features
- Professional formula for more flowers and brighter colors
- Proven 1:3:2 nutrient ratio for unmatched quality
- Feeds through roots and leaves for optimal uptake
- Trusted by professional growers
- Great for vegetables and fruit
- Can be used as a transplant solution
What customers say
Customers consistently praise this bloom booster for its remarkable effectiveness in promoting abundant and vibrant blooms. Many users report significant improvements in flower production and overall plant health, often seeing results quickly. Its water soluble formula makes it incredibly easy to mix and apply, simplifying plant care routines for both novice and experienced gardeners. The product's reliability in delivering consistent, impressive results is a recurring highlight, making it a trusted choice for enhancing flowering plants.
Know before you buy
While it is excellent for flowering plants, the 10-30-20 ratio is also highly effective for vegetables and fruits. It helps support the development of blooms, which is a necessary precursor to fruit and vegetable production.
This formula is designed for both root and foliar feeding. You can apply it to the soil for standard root uptake or spray it directly onto the leaves for faster absorption.
Yes, it works well as a transplant solution. Using it when you first plant helps provide the nutrients needed for a strong, healthy start in a new environment.
Absolutely. It is formulated for both indoor and outdoor plants, making it a versatile choice for potted flowers or indoor greenery that requires a boost for blooming.
The high middle number (30) indicates a high phosphorus content, which is the primary nutrient responsible for stimulating flower and fruit production. The balanced nitrogen and potassium levels support overall plant health and color vibrancy.
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