The Best Fertiliser for Indoor Plants To Thrive

Indoor plants are a great addition to any home. They add colour, fresh air, and help improve air quality. However, for indoor plants to thrive and grow, they need to receive proper care, including regular feeding. Fertilisers are one of the essential components of a healthy diet for indoor plants.

In this article, we will learn all inform you about everything regarding fertilisers so that you can choose the best fertiliser for indoor plants.

The types of Best Fertiliser for Indoor Plants

Liquid fertiliser

Liquid fertiliser for indoor plants
Liquid fertiliser for indoor plants (Source)

Liquid fertilisers are easy to use and can be applied directly to the soil. They are fast-acting, which means that the plants receive the nutrients they need immediately. They are also versatile and can be used on any type of indoor plant. However, liquid fertilisers can be messy to handle and often contain high levels of salts that can be harmful to the soil and plants if used in excess.

Another advantage of utilising liquid fertilisers manufactured from naturally occurring substances is that they work as growth promoters in addition to supplying nutrients to indoor plants. Numerous micronutrients, trace minerals, vitamins, amino acids, and plant hormones are all present in them, and each one is essential to the health and vitality of your houseplants.

Granular fertiliser

Granular fertiliser for indoor plants
Granular fertiliser for indoor plants (Source)


Granular fertilisers provide a steady supply of nutrients over a longer period of time. This is beneficial because the plants are not exposed to high levels of nutrients at once. Granular fertilisers are also easy to store and are available in a variety of formulas designed for various types of indoor plants.

These include calcium carbonate, rock phosphate, dried worm castings, bone meal, and various mineral, plant, and animal-based substances. 

Slow-release fertilisers

Slow release fertiliser for indoor plants
Slow release fertiliser for indoor plants (Source)


Slow-release fertilisers are coated with a polymer that breaks down over time. The helps in releasing the nutrients in a slow, steady stream. They are ideal for indoor plants because they are mess-free and easy to use. 

However, these fertilisers for indoor plants are created using a synthetic supply of nutrients. Although it is quite practical, you should keep in mind that they are not produced using environmentally safe materials.

Organic Fertiliser

Organic fertiliser for indoor plants
Organic fertiliser for indoor plants (Source)


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Organic fertilisers are made from natural sources, such as animal manure, compost, or bone meal. They provide a steady supply of nutrients over a longer period of time. Organic fertilisers are eco-friendly and safe to use, but they may take longer to show results.

Essential Nutrients for Indoor Plants


The first essential nutrient that indoor plants require is Nitrogen (N). Nitrogen is a key component in the formation of chlorophyll and plays a crucial role in the growth of leaves and stems. Indoor plants require a balanced supply of nitrogen to maintain their green foliage and promote healthy growth. 


The second essential nutrient that indoor plants require is Phosphorus (P). Phosphorus is critical for root growth and helps to develop strong stems and flowers. It also helps to create energy in the form of ATP which is used for the growth and maintenance of the plant.


The third essential nutrient that is required is Potassium (K). Potassium helps to strengthen the plant’s cell walls and also helps to regulate water balance within the plant. It is essential for the development of strong roots, stems, and leaves, and also helps to prevent diseases. 


Next, Calcium (Ca) is one of the most important nutrients required by indoor plants. Calcium helps to strengthen cell walls and promotes healthy root growth. 


Additionally, Magnesium (Mg) is an essential nutrient as well. Magnesium is essential for the production of chlorophyll and is involved in the process of photosynthesis. It is also involved in the creation of new growth and helps to promote healthy stems and leaves. 

By providing these essential nutrients, you can ensure the growth and survival of your indoor plants and enjoy the many benefits they bring.

Choosing the best fertiliser for indoor plants

Fertilising is a critical aspect of gardening and growing plants. It is the process of providing essential nutrients to the soil to ensure the healthy growth of plants. It is used to supplement the soil’s natural supply of nutrients and maintain soil fertility.

Choosing the right fertiliser is crucial for the growth of healthy plants and to avoid over or under fertilisation, which can cause damage to plants and soil.

Type of fertiliser

When choosing fertiliser, you need to consider the type of plant you are growing, the stage of growth, the soil type, and the time of year. The most common types of fertilisers are chemical and organic. Chemical fertilisers contain a specific balance of nitrogen, phosphorus, and potassium. Organic fertilisers are made from natural materials such as compost, manures, and bone meal.

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Type of plant

One of the most important factors to consider when choosing fertiliser is the type of plant you are growing. Different plants have different nutritional requirements, and some may require more of one nutrient than others.

For example, tomatoes require more nitrogen than other vegetables, and roses need more potassium for healthy growth. You should also take into consideration the stage of growth of the plant. A seedling requires less fertiliser than a mature plant.

Soil type

Soil type
Soil type (Source)


The soil type is another important factor to consider when choosing fertiliser. Different soils contain varying amounts of nutrients, and the right fertiliser will help balance the nutrients in the soil.

For example, if your soil is high in phosphorus, you should choose a fertiliser that is low in phosphorus and high in nitrogen and potassium.


Additionally, you should take into account the time of year when choosing fertiliser. Plants need different nutrients at different times of the year. For example, in the spring, you should use a fertiliser that is high in nitrogen to promote growth. Also, in the fall, you should choose a fertiliser that is high in potassium to help the plant prepare for winter.


Indoor plants are a popular form of greenery for homes and offices. These plants not only enhance the aesthetic appeal of your surroundings but also have numerous health benefits such as improving air quality and reducing stress.

However, to ensure the growth and survival of indoor plants, it is important to provide them with essential nutrients that are necessary for their survival. You can provide them with the necessary nutrients through the proper use of fertilisers.

We hope our list of the best fertiliser for indoor plants has helped you out.