A general-purpose, water-soluble fertilizer supplying nitrogen, phosphorus and potassium in a balanced 20-20-20 analysis. Choose it when your feeding programme calls for all three major nutrients together.
GreenSoil plant nutrition, distributed by Linx Grow Supply.
Why use 20-20-20?
- Balanced NPK: Supplies nitrogen, phosphate and potash in equal fertilizer-label percentages.
- Measured liquid feeding: Dissolve in water to prepare a feed matched to your plants.
- General-purpose nutrition: An option for active growth when a specialist nutrient ratio is not required.
- Flexible feeding programme: Account for the nutrients already present in your soil, water and other fertilizers.
When to use it
Use during active growth when the crop needs a general-purpose feed. Reduce or pause feeding as growth slows, and assess water, roots and growing conditions before treating poor growth as a nutrient shortage.
Suitable uses
Suitable for a crop-specific garden, container or greenhouse feeding programme. The Plant-Prod Classic reference supplied for this product includes annuals and green plants. A balanced NPK grade does not by itself establish a complete hydroponic solution.
Product analysis
The supplied Plant-Prod Classic reference lists nitrate nitrogen 5.9%, ammoniacal nitrogen 3.9% and urea nitrogen 10.2%; chelated iron 0.100%, manganese 0.050%, zinc 0.050% and copper 0.050%; boron 0.020% and molybdenum 0.0005%. It contains no calcium or magnesium. Match the detailed analysis to the actual supplied label.
Mixing and application
The supplied general gardening guide uses 5 g in 4 L of water (1.25 g/L), every 7–14 days. This is a store-guide rate, not a universal hydroponic or foliar recipe. Adjust to the crop and follow the matching label. Weigh the fertilizer, stir until dissolved and apply to moist growing medium. Confirm compatibility before combining fertilizers.
Storage and handling
Reseal after use and store cool and dry, away from moisture. Keep out of reach of children and pets. Follow the matching product label and safety data sheet.
Pack sizes
- 1 lb: approximately 454 g net contents.
- 2 lb: approximately 907 g net contents.
- 4 lb: approximately 1.814 kg net contents.
Select a size above to view its price. Net contents exclude shipping packaging.
Packaging images are illustrative previews. Final packaging may differ.
Growing guide
Read the product-specific guide, and use the matching supplied label and crop requirements when planning applications.
Read the 20-20-20 growing guide →Technical background: Plant-Prod Classic formulation reference. Reference products are not a statement of our supplier identity.
What does 20-20-20 mean?
It means 20% nitrogen, 20% available phosphate expressed as P₂O₅ and 20% soluble potash expressed as K₂O. It is an analysis, not a mixing ratio or equal percentages of elemental N, P and K.
How much should I mix with water?
The supplied general gardening guide uses 5 g in 4 L every 7–14 days. Confirm suitability for your crop and label. Measure by weight; a teaspoon does not have a fixed fertilizer mass.
Does it contain calcium and magnesium?
The supplied Plant-Prod Classic reference contains neither calcium nor magnesium. Account for these separately where your crop, water and growing medium require them.
Can I use it in hydroponics?
It can only be assessed as part of a complete recipe matched to the crop and source water. A 20-20-20 analysis alone does not establish a complete hydroponic feed.
Can I use the same mixture as a foliar spray?
Do not automatically transfer root-feeding directions to leaves. Foliar use needs directions matched to the product, crop and application conditions.
Is it an organic fertilizer?
This product is classified as a non-organic mineral fertilizer. No organic certification or approval for certified-organic production is claimed.