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The Best Fertiliser To Use For Your Beautiful Homegrown Plants & Produce

Updated: Jul 4, 2022

by Insect Feed Technologies

When was the last time you fertilised your plants?

In the tropics, including Singapore, the soil is generally acidic and low in essential nutrients necessary for our plants’ growth. This tends to be due to excessive rainfall, causing nutrients to be lost rapidly. Even if we start with great garden soil, our plants grow and absorb these nutrients, eventually leaving the soil less fertile. By using plant fertiliser, we help to replenish lost nutrients and ensure that they have the food they need to flourish!

What is N–P–K?

Walking through the aisles of our garden centres, we observe that fertilisers are usually distinguished by the series of three numbers on their packaging labels, like 3-3-3 or 6-2-4. These three numbers represent the value of the Nitrogen (N), Phosphorus (P) and Potassium (K) ratio of each pack respectively, in which the higher the number, the more concentration of nutrients in the fertiliser.

N, P and K are macronutrients that our plants in relatively large amounts require. To better understand the individuals’ purpose, here is a visual representation.

Image Credit: Illustration of the Purpose of N-P-K

When should I use fertiliser with NPK?

The table below breaks down the benefits of NPK to help you make a more informed decision when it comes to your plants.

NPK Fertiliser Benefits
Breakdown of NPK in fertiliser

Starting your Vegetable Garden

A general vegetable fertiliser with balanced N-P-K is adequate. Phosphorus is needed for root development and growth, and potassium strengthens plants’ resistance to diseases. When starting your vegetable garden, nitrogen is the least important macronutrient. Hence, the first number in the N-P-K formula can be lower.