All rights reserved. Plants need water, air, light, suitable temperature, and sixteen nutrients to grow.
Plants get carbon, hydrogen and oxygen from air and water.
The other thirteen nutrients come from the soil. Soil nutrients are divided into two groups according to the amounts needed by plants. The Macronutrients are nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur. The Micronutrients, which are needed in only trace amounts, are iron, manganese, boron, zinc, copper, molybdenum and chlorine. These nutrients are essential for plant growth.