Best 3 Organic Soil Amendments for Nutrient Boost

EEdgar November 20, 2023 7:02 AM

Keeping your garden healthy and vibrant means understanding the value of soil amendments. These additions to your soil can improve its structure, enhance its ability to hold water, and most importantly, boost nutrient levels. And when it comes to soil amendments, organic options are the way to go. They not only provide the nutrients your plants need, but also improve soil health in a sustainable manner. In this article, we'll explore the best 3 organic soil amendments that can give your garden a nutrient boost.

Understanding soil amendments

Soil amendments are materials added to the soil to enhance its physical properties. They can improve soil structure, increase its ability to hold water and nutrients, and promote healthy plant growth. Organic soil amendments come from natural sources and are often decomposed or composted before being added to the soil.

Why organic soil amendments?

Organic soil amendments offer several benefits over synthetic or chemical options. They can help increase soil fertility, improve soil structure, and provide a consistent supply of nutrients to plants. Plus, they're sustainable and safe for the environment. Some of the popular types of organic soil amendments include compost, manure, bone meal, and others.

Best 3 organic soil amendments for nutrient boost

  1. Compost: Compost is one of the best organic soil amendments out there. It's made from decomposed organic matter like vegetable scraps, lawn clippings, leaves, and more. Compost helps improve soil structure and water retention, along with providing essential nutrients to plants. It's easy to make at home, making it a sustainable and cost-effective option.

  2. Manure: Manure, especially from cows, horses, or chickens, is another excellent organic soil amendment. It is rich in nitrogen, a nutrient essential for plant growth. Like compost, manure also improves soil structure and water retention capabilities. However, it's important to make sure the manure is well-rotted before use to avoid burning plants.

  3. Bone Meal: Bone meal is made from ground animal bones, making it a rich source of phosphorous, a nutrient essential for root development and flowering in plants. It can be mixed into the soil before planting or used as a top dressing for established plants.

Let's dive into more detail on each of these.


Compost is a nutrient-rich soil conditioner made from decomposed organic material like kitchen scraps, yard waste, and manure. It's an excellent source of macro and micro-nutrients and can improve soil structure, water retention, and fertility. The great thing about compost is that it's easy to make at home from waste materials.


Applying compost is simple. For new gardens, mix 2-3 inches of compost into the topsoil before planting. For established gardens, you can add a 1-inch layer of compost to the top of the soil surface.


Manure is another organic soil amendment that's rich in nutrients like nitrogen, phosphorous, and potassium. It also improves soil structure and water holding capacity. However, it's important to note that fresh manure can be too strong for plants and can burn their roots. It's best to use well-rotted manure or composted manure.


Like compost, manure can be mixed into the soil before planting or added as a top dressing. If using as a top dressing, apply a 1-2 inch layer of manure around the base of plants.

Bone Meal

Bone meal is a slow-release phosphate fertilizer that's excellent for promoting root development and flowering in plants. It's made from ground up animal bones, making it a rich source of phosphorous and calcium.


Bone meal can be mixed into the soil before planting at a rate of 10 pounds per 100 square feet. It can also be applied as a top dressing around established plants.

Wrap up

Choosing the right soil amendment can make a huge difference in your garden's health and productivity. Compost, manure, and bone meal are among the best organic soil amendments for a nutrient boost. Remember, the key is to understand your soil's needs and choose the amendment that best meets those needs.

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