01/10/2026
Plant nutrition
Just like all animals, plants also need nutrition at different stages of their life cycles. So before you swear by Epson salt (magnesium sulphate)🫣 🙆🏻♀️ give yourself time to learn and understand plant nutrition and its purpose to plant health. Plant nutrition is divided into 2 groups
1 . Macro elements - Macro means large or primary or imperative nutrients that are required for plant development, growth and health. Without these, plant survival is slim. Almost similar in context to proteins and vitamins in animals.
These are the most vital components of fertilizers. Simply referred to as NPK;
☘️Nitrogen(N) - for building leaves or vegetative growth and chlorophyll (the green part of a plant). We all know that without leaves a plant can’t produce flower, fruit, seeds. Nitrogen also builds the plants DNA 🧬 - this simply refers to the make up of a plant and what differentiates each plant
🧪 Phosphorus (P) - important for root development. At young/seedling stage this is an essential nutrient to give the plant energy to anchor itself in the ground and be able to transfer nutrients from the soil to the plant
🍌 Potassium (K) - required for the plant’s survival, its the plant’s defense system, almost like white blood cells in humans. Applied additionally at fruiting stage it will promote the taste of fruits.
2. Micro elements
Micro means small or secondary nutrients that are necessary for plant health. They vary from calcium, magnesium, sulphur, etc. Calcium for example is responsible in breaking down the nutrients to be able to be taken up by the plant, and to improve flowering, thereby fruits.
All of these nutrients are needed to avoid stunted growth, sick plants and poor yields.
Unfortunately organic fertilizers don’t usually breakdown the NPK. However knowing the make up of the compost, manure, etc helps in determining nutrient value. Eg
Nitrogen-Comfrey is very rich in nitrogen, alfalfa, Lucerne, etc
Phosphorus -seaweed or kelp liquid fertilizers, kraal manure, wood ash, etc
Potassium-banana peels, potato peels, bean leaves, wood ash, etc
Calcium- bonemeal, egg shells, etc
Magnesium- epson salt, compost, lime, etc
Plants are expensive so let’s feed them well🙏
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