What ratio is generally recommended for granular fertilizers as primary plant food nutrients?

A ratio of 3:1:2 for granular fertilizers is often recommended as it aligns well with the nutritional needs of many plants. This ratio indicates that for every 3 parts of nitrogen, there are 1 part of phosphorus and 2 parts of potassium.

Nitrogen (N) is crucial for vegetative growth, as it promotes leafy development. An adequate amount of nitrogen ensures that plants can grow strong foliage, which is essential for photosynthesis and overall health.

Phosphorus (P) plays a key role in energy transfer and root development, supporting flowering and fruiting processes. The inclusion of phosphorus, albeit in a smaller proportion, is important for encouraging strong root systems and successful blooming.

Potassium (K) helps improve overall plant health and disease resistance. It supports various physiological processes, including water regulation and enzyme activity. With a ratio of 2 parts of potassium, the fertilizer ensures that plants receive the necessary support for resilience and productivity.

Choosing a 3:1:2 ratio addresses the different nutrient requirements of plants at various growth stages, making it a balanced option for general use in landscape horticulture. This ratio is effective for promoting healthy growth and optimizing the output of flowering and fruiting plants.