Why do plants need fertilisers? Because farming steals nutrients from soil faster than nature can replace them.
🌱 The Analogy
Think of your plant as a bodybuilder. It needs protein (N) to build muscle (leaves), creatine (P) for explosive power (roots & flowers), and vitamins (K) to stay healthy and fight off illness. A fertiliser bag labelled 15-5-10 means 15% N, 5% P, 10% K by mass.
🎛️ The Fertiliser Sliders — Watch Your Plant React!
N — Nitrogen10%
Leaf size & greenness
P — Phosphorus10%
Root depth & flowers
K — Potassium10%
Plant health & resilience
N=10% · Moderate
P=10% · Moderate
K=10% · Moderate
📌 The Cambridge Definition — Learn this word-for-word!
"NPK fertilisers are used to provide nitrogen, phosphorus and potassium for improved plant growth."
⚠️ Examiner Trap: The purpose is always "improved plant growth" — do NOT write "to feed plants" or "for nutrition."
IGCSE Chemistry 0620 · Section 10.2.2 Core · The Limitless Chemistry Professor
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