JACKS ALL PURPOSE 20-20-20 1.5LB
Best balanced nutrient solution for indoor and outdoor plant enthusiasts.
Jack's Classic All Purpose 20-20-20 is the go-to fertilizer for professional growers, offering a balanced formula for all your plants, indoors and out. This water-soluble powder provides essential nutrients for robust growth, promoting rapid green-up and healthy leaf expansion. It's proven effective for vibrant foliage plants and a staple in vegetable gardens for generations. For enhanced blooms, it can be combined with Blossom Booster. This general-purpose fertilizer ensures your plants receive comprehensive feeding for optimal health and appearance.
$16.99
Owner Satisfaction
4.8
/ 5
Category Rank
1
/ 4425
Best Fertilizers
Price vs Category Average
-72%
Below average
NPK Ratio
202020
/ --
Who it's for
- Serious hobbyists wanting professional-grade results and reliable plant health
- Gardeners seeking one versatile solution for diverse plant collections
- Plant owners needing immediate results for nutrient-deficient foliage
Who should skip it
- Convenience-seekers who prefer ready-to-use liquid fertilizers over manual mixing
- Specialized growers requiring targeted nutrient ratios for specific growth phases
- Busy gardeners preferring low-maintenance, slow-release feeding schedules
Performance breakdown
Nutrient Balance
The classic 20-20-20 ratio provides reliable, comprehensive nutrition for diverse plant types.
Solubility Speed
Dissolves rapidly in water for immediate, mess-free application to roots or foliage.
Versatility
A true workhorse that performs equally well on houseplants and vegetable patches.
Foliage Impact
Delivers a noticeable green-up effect that revitalizes tired, pale-looking leaves quickly.
Application Flexibility
Works seamlessly as either a soil drench or a direct foliar spray.
System Compatibility
Pairs perfectly with specialty boosters to customize your seasonal feeding regimen.
Key Specs
NPK Ratio
20-20-20
Package Weight
1.5 LB
Item Number
52024
Model Number/SKU
JC-52024
Fertilizer Source
Mineral Based
Nitrogen Percentage
20%
Phosphorus Percentage
20%
Potassium Percentage
20%
Features
- Industry standard for general-purpose feeding
- Dual feeding action for roots and leaves
- Promotes fast green-up and leaf expansion
- Maintains deep green color in foliage
- Proven performance in vegetable gardens
- Can boost flower production with Blossom Booster
What customers say
Consumers consistently praise the exceptional quality and reliability of Jacks All Purpose fertilizer. The primary insight is its powerful efficacy; users report rapid, visible improvements in plant health, foliage density, and bloom production across diverse gardens. Furthermore, the ease of use is a major highlight, as the formula dissolves completely and quickly in water, ensuring hassle free application and consistent feeding. This product delivers professional grade results effortlessly.
Know before you buy
Yes, the 20-20-20 formula is a balanced, all-purpose fertilizer designed to support a wide variety of plants, including indoor foliage, outdoor flowers, and vegetable crops.
This is a water-soluble powder that should be mixed with water according to the package instructions. It can be applied as a soil drench to feed the roots or as a foliar spray to be absorbed directly through the leaves.
No, this is a quick-release, mineral-based fertilizer. It provides immediate nutrient availability to your plants, which is ideal for correcting deficiencies or encouraging rapid growth.
Yes, you can combine this with Jack's Classic Blossom Booster if you want to encourage more flower production while maintaining the general health of your plants.
Because it is a quick-release formula, it is intended for regular, ongoing feeding throughout the spring, summer, and fall. Always check the specific needs of your plant variety to determine the ideal feeding frequency.
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$17