NPK Basics
What are Nitrogen, Phosphorus, and Potassium?
N-P-K stands for these 3 main nutrients in fertilizer.
What is the percentage of N-P-K nutrients?
The three numbers on a fertilizer bag show this.
What is organic fertilizer?
Fertilizer made from natural sources like compost or manure.
What is a fertilizer high in nitrogen?
Best fertilizer choice when plants have yellow leaves and slow growth.
What is wash hands?
Students should do this after handling fertilizer.
What is Nitrogen (N)?
This nutrient helps plants grow green leaves and stems.
What is Nitrogen?
If fertilizer is 20-0-0, it contains mostly this nutrient.
What is synthetic fertilizer?
Fertilizer made from chemicals in a factory.
What is a fertilizer high in phosphorus?
Best fertilizer choice when you want more flowers.
What is fertilizer burn?
This can happen if too much fertilizer is used.
What is Phosphorus (P)?
This nutrient helps with roots, flowers, and fruits.
What is Phosphorus?
The label number 5-10-5 means the fertilizer has more of this nutrient.
What is slow-release fertilizer?
This fertilizer works slowly over time.
What is a fertilizer with potassium?
Best fertilizer choice for strong roots and healthy plants.
What are warnings/cautions?
This label section warns about dangers like “keep out of reach of children.”
What is Potassium (K)?
This nutrient helps plant strength and fights disease.
What is the instructions/directions section on the label?
This is where you can find directions like “apply every 2 weeks.”
What is fast-release fertilizer?
This fertilizer works quickly, but can burn plants if too much is used.
What is nitrogen-rich fertilizer?
A good choice for lawn/grass growth.
What is a cool, dry, locked storage area?
The best place to store fertilizer at school.
What is a balanced fertilizer?
A fertilizer label that says 10-10-10 has this type of nutrient balance.
What is the application rate?
This label information tells you how much fertilizer to use and helps prevent overuse.
What is fertilizer tea?
Fertilizer made by soaking natural materials in water (like grass clippings).
What is a balanced fertilizer like 10-10-10?
This fertilizer helps plants grow overall when you don’t know what they need.
What are rivers, ponds, and storm drains?
Fertilizer can be harmful if it gets into these.