Jack's Classic 20-20-20 All Purpose Fertilizer w/ Micronutrients, 4 Pounds
Jack's Classic 20-20-20 All Purpose Fertilizer w/ Micronutrients, 4 Pounds
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Jack's

Jack's Classic 20-20-20 All Purpose Fertilizer w/ Micronutrients, 4 Pounds

|82 ratings

Key item features

  • Balanced NPK Formula: Jack's Classic 20-20-20 All Purpose Fertilizer features a balanced 20-20-20 blend of nitrogen, phosphorus, and potassium, recognized as an industry standard by professional growers.
  • Dual Nutrient Delivery: This water-soluble plant food effectively feeds through both roots and leaves, ensuring rapid green-up and fast leaf expansion.
  • Enriched Micronutrient Support: Includes fully chelated trace elements and an enhanced micronutrient package, providing optimal nutrition for strong root development and vibrant green foliage.
  • Versatile Plant Coverage: Recommended for all indoor and outdoor plants: bedding and container plants, trees, shrubs, vegetables, fruits, and turf.
  • Sustained Growth Release: Designed for gradual nutrient release, supporting up to four months of vigorous growth with a high safety factor to prevent burning.
  • Convenient Measuring Spoon: A free measuring spoon is enclosed, facilitating easy and precise application for consistent and effective plant feeding.
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Specs

Fertilizer type, SyntheticNpk ratio, 20-20-20Release rate, 4 MonthsForm, GranulesRec. use, PlantRec location, Indoor, Outdoor

About this item

Product details

All Purpose 20-20-20 is considered the industry standard of general purpose fertilizers by professional growers. It feeds both through the roots and the leaves. This formula of nitrogen, phosphorus and potassium provides fast green-up and rapid leaf expansion. Recommended for use on all your indoor and outdoor plants. Indoors it is especially effective on foliage plants, keeping leaves green. A proven performer in the vegetable garden for generations, this product may be used in combination with Jack’s Classic Blossom Booster giving your plants greener leaves, more flowers and brighter colors.
  • NPK:  20-20-20
  • Water soluble plant food with micronutrients
  • Use for all indoor and outdoor plants: bedding and container plants, trees and shrubs, vegetables, fruits and turf
  • Jack's Classic All Purpose, 20-20-20, 4 lb. Tub
  • All Purpose 20-20-20 is considered the industry standard of general purpose fertilizers by professional growers. It feeds both through the roots and the leaves. This formula of nitrogen, phosphorus and potassium provides fast green-up and rapid leaf expansion. Recommended for use on all your indoor and outdoor plants. Indoors it is especially effective on foliage plants, keeping leaves green. A proven performer in the vegetable garden for generations, this product may be used in combination with Jack’s Classic Blossom Booster giving your plants greener leaves, more flowers and brighter colors.
    • NPK:  20-20-20
    • Water soluble plant food with micronutrients
    • Use for all indoor and outdoor plants: bedding and container plants, trees and shrubs, vegetables, fruits and turf
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Specifications

Fertilizer type

Synthetic

Npk ratio

20-20-20

Release rate

4 Months

Form

Granules

Warranty

Warranty information

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Customer ratings & reviews

4.7 out of 5 stars
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82 ratings21 reviews
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How item rating is calculated
  1. 5 stars82% (67)
  2. 4 stars7% (6)
  3. 3 stars7% (6)
  4. 2 stars1% (1)
  5. 1 star2% (2)
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Showing 1-3 of 21 reviews

Jun 17, 2026
Reviewer name: shirley
Item details
Size: 4 LB Tub
Sold and shipped byEsbenshades Garden Center
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Trying will take few weeks to see suits. A friend told me works for her in door plants like magic so Im giving a try

Helpful?3ERNJQL3T9ID22210039
Jul 8, 2026
Reviewer name: James
Sold and shipped bySupply Solutions
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

This is wonderful. I've used it for several years.

Helpful?3ERNJQL3T9ID22210039
Jul 15, 2025
Reviewer name: Gerard
Item details
Size: 4 LB Tub
Sold and shipped byEsbenshades Garden Center
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Worked well on the tomato plants in my raised garden. Lots of good growth and formation of new fruit.

Helpful?3ERNJQL3T9ID22210039
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