NPK is an abbreviation for Nitrogen (N), Phosphorus (P), and Potassium (K). These elements collectively provide nourishment for the soil.

Nitrogen: What is the function of Nitrogen (N)?

Nitrogen (N) promotes plant growth and also helps keep the leaves a nice green. When there is too little nitrogen, the leaves will turn yellow and the plant will no longer grow well. With too much nitrogen, the plant develops larger leaves, but they will be very limp and watery. The plants also become more susceptible to fungi and diseases.

Phosphorus: What is the function of Phosphorus (P)?

Phosphorus (P) is very important for the respiration and energy supply of the plant. It promotes root development, flowering, seed formation, and ripening of the plant. When there is too little phosphorus, there is poor development of lateral roots and the leaves may develop an unusual color. Excess phosphorus can cause a deficiency of zinc and iron.

Potassium: What is the function of Potassium (K)?

Potassium (K) is necessary for the transport of water and carbohydrates. It also enhances the sturdiness of the plant, improves the formation of roots and fruits, and reduces susceptibility to drought and frost. When there is too little potassium, the leaves wilt, fewer large flowers are produced, and the quality of the flowers is poor. If there is too much potassium, the plants will contain more water.