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All About Organic Fertilizing

applying organic fertilizer to young plant

There are numerous benefits to using organic fertilizers over synthetic fertilizers. Here are some of the main benefits:

Environmental Sustainability:

Organic fertilizers are derived from natural sources and are made from renewable materials. They help to reduce the environmental impact associated with synthetic fertilizers, which are often made from non-renewable resources.

Soil Health:

Organic fertilizers contain essential nutrients that help to build and maintain healthy soil. They improve soil structure, water retention, and nutrient availability, which in turn, supports healthy plant growth.

Nutrient Availability:

Organic fertilizers release nutrients slowly over time, ensuring that plants have a consistent supply of nutrients. This helps to prevent nutrient deficiencies and reduces the risk of fertilizer burn, which can occur when plants are exposed to high concentrations of nutrients.


Organic fertilizers do not contain harmful chemicals or toxins that can harm the environment, wildlife, or humans. They are safe to use and can help to reduce the use of synthetic pesticides and herbicides.

Improved Plant Health:

Organic fertilizers contain a variety of nutrients, minerals, and trace elements that are essential for plant growth and health. They help to improve root development, reduce plant stress, and promote overall plant vigor.

Increased Yield:

Organic fertilizers can help to increase the yield and quality of crops. They promote healthy growth, reduce the risk of disease and pest infestations, and improve the flavor and nutrient content of fruits and vegetables.


Organic fertilizers can be more cost-effective than synthetic fertilizers in the long run. Although they may be initially more expensive, they provide long-term benefits that can help to reduce the need for expensive inputs like synthetic pesticides and herbicides.

Overall, organic fertilizers provide numerous benefits for plants, soil, and the environment. They are a sustainable, safe, and effective way to promote healthy plant growth and increase yields. By using organic fertilizers, gardeners can help to support a healthier, more sustainable future for our planet.


Organic fertilizers are an essential aspect of gardening, as they provide the necessary nutrients for plants to grow healthy and strong. Organic fertilizers are derived from natural sources and are considered to be safer and more sustainable than chemical fertilizers. In this blog, we will discuss various types of organic fertilizers that gardeners can use, their applications during different growth stages, and specific needs of different types of plants.

Understanding the Fertilizing Terms:

Before diving into the different types of organic fertilizers, it's important to understand the meaning of the three numbers printed on all fertilizers. These three numbers represent the N-P-K ratio, which stands for Nitrogen (N), Phosphorus (P), and Potassium (K). These three elements are essential for plant growth, and each plays a specific role in the development of plants.

Nitrogen (N):

Nitrogen (N) is responsible for promoting vegetative growth, including the growth of leaves, stems, and branches.

Phosphorus (P):

Phosphorus (P) is essential for the development of healthy roots, flowers, and fruits. 

Potassium (K):

Potassium (K) helps with overall plant health and improves resistance to disease, drought, and other environmental stresses.

Types of Organic Fertilizers:

a) Compost:

Compost is a natural fertilizer that is made by decomposing organic matter like leaves, grass, and food waste. It's rich in nutrients and provides a balanced mix of N-P-K. Compost can be used during any growth stage of plants and can benefit all types of plants.

b) Manure:

Animal manure is a nutrient-rich fertilizer that is high in nitrogen, phosphorus, and potassium. Manure is available in various forms like cow, horse, chicken, and sheep, and can be used during any growth stage of plants. However, it's important to use aged manure to avoid burning the plants.

c) Bone Meal:

Bone meal is a slow-release organic fertilizer that is rich in phosphorus. It's best used during the flowering and fruiting stages of plants when they require more phosphorus.

d) Fish Emulsion:

Fish emulsion is a liquid fertilizer made from fish waste. It's high in nitrogen and can be used during the vegetative growth stage of plants.

e) Seaweed:

Seaweed is an excellent organic fertilizer that is rich in trace minerals and is high in potassium. It's beneficial for all types of plants, and can be used during any growth stage.

Specific Needs for Different Types of Plants:

a) Fruiting Plants:

Fruiting plants like tomatoes, peppers, and strawberries require higher levels of phosphorus and potassium during their fruiting stage. Using bone meal and seaweed can help fulfill these nutrient requirements.

b) Ornamental Flowering Plants:

Ornamental plants like roses, hibiscus, and petunias require higher levels of phosphorus and potassium to promote flowering. Bone meal and seaweed can be used during the flowering stage to provide these nutrients.

c) Woody Shrubs:

Woody shrubs like lilacs and hydrangeas require higher levels of phosphorus to promote healthy root growth and flowering. Bone meal is an excellent organic fertilizer for these plants.

d) Perennials:

Perennials like hostas and daylilies require a balanced mix of N-P-K during their growth stage. Compost and seaweed are excellent organic fertilizers for these plants.

Vegetative Growth vs. Flowering Period:

The primary difference between a fertilizer good for vegetative growth versus flowering is the N-P-K ratio. Fertilizers that are high in nitrogen promote vegetative growth and are beneficial during the early stages of plant development. On the other hand, fertilizers that are high in phosphorus and potassium promote flowering and fruiting and are best used during the flowering period. It's important to switch to a fertilizer that is higher in phosphorus and potassium during the flowering period to support healthy flower and fruit development. Using a fertilizer with a balanced N-P-K ratio throughout the growth stage can help plants grow healthy and strong, but it's essential to adjust the ratio during specific growth stages to meet the plant's needs.

Tips for Using Organic Fertilizers:

a) Always follow the instructions:

Always follow the instructions on the packaging and avoid over-fertilizing as it can lead to burn the plants and cause harm.

b) Apply fertilizers evenly:

Apply fertilizers evenly around the base of the plant to ensure all parts of the plant receive the necessary nutrients.

c) Use aged manure:

Use aged manure to avoid burning the plants and spreading diseases.

d) Use liquid fertilizers diluted:

Use liquid fertilizers like fish emulsion and seaweed in a diluted form to avoid burning the plants.

e) Use compost tea

Compost tea, made by soaking compost in water, is an excellent organic fertilizer that can be used throughout the growth stage of plants.


Organic fertilizers are an excellent choice for gardeners who want to grow healthy, sustainable plants. Understanding the N-P-K ratio and the specific needs of different types of plants can help gardeners choose the right organic fertilizer for their garden. By using organic fertilizers and following the tips mentioned above, gardeners can help their plants grow healthy, strong, and produce a bountiful harvest.

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