20-20-20 Fertilizer: Complete Guide
Twice as concentrated as 10-10-10 in fully water-soluble form, this balanced fertilizer dissolves completely for liquid feeding of houseplants, greenhouse crops, and hanging baskets. Mix 1 tablespoon per gallon and apply every 1-2 weeks. Burns roots fast if over-measured because all nutrients are immediately available, so precision matters more here than with granular options.
Key Facts
20N
20P
20K
N 20% Nitrogen: leaf and stem growth
P 20% Phosphorus: roots and flowers
K 20% Potassium: health and disease resistance
Learn more about NPKNPK Ratio
20N
20P
20K
N 20% Nitrogen: leaf and stem growth
P 20% Phosphorus: roots and flowers
K 20% Potassium: health and disease resistance
Learn more about NPKFormwater-soluble
Application Rate1 tablespoon per gallon of water for container plants
Price~$3.5/lb est.
Release Speedimmediate
Burn Riskhigh
High Risk: High burn risk. Reduce application rate or dilute before use.
What is 20-20-20 Fertilizer Best For?
When Should You Use 20-20-20 Fertilizer?
Use for container gardening, houseplants, and greenhouse crops where precise liquid feeding is needed.
When Should You NOT Use 20-20-20 Fertilizer?
Not recommended for direct soil application on lawns or gardens. Too concentrated and expensive for large areas.
Source:Clemson University Extension