Blog What is Humus and Humic Acid? Jan 31, 2024

What is Humus and Humic Acid?

If you've ever worked on your lawn or garden, you may have come across the terms 'humus' and 'humic acid.' But what exactly are these substances and what role do they play in lawn care?

Humus is a dark, organic substance that forms when plant and animal matter decomposes. It is a critical component of healthy soil because it improves its structure, fertility, and water-holding capacity. Humus is created through the breakdown of organic matter by microorganisms, such as bacteria, fungi, and earthworms.

Humus helps to improve soil structure by binding soil particles together, creating aggregates. These aggregates allow for better airflow and water movement in the soil. Additionally, humus acts like a sponge, absorbing excess water and slowly releasing it back into the soil, ensuring plants have access to moisture even during dry periods.

In terms of fertility, humus contains essential nutrients that plants need to thrive, such as nitrogen, phosphorous, and potassium. It also helps to retain other nutrients and prevent them from being washed away by rain or irrigation. This means that incorporating humus into your lawn or garden can help reduce the need for synthetic fertilizers.

Humus also plays a crucial role in promoting beneficial soil microorganisms. These microorganisms, including bacteria and fungi, break down organic matter further, releasing additional nutrients that plants can use. They also help to suppress harmful pathogens, such as certain types of fungi that can cause plant diseases.

Humic acid, on the other hand, is an organic compound that is derived from humus. It is formed through the chemical and biological breakdown of plant and animal residues. Humic acid is highly beneficial for plants as it enhances nutrient uptake, improves soil structure, and stimulates root and plant growth.

Humic acid works by binding to nutrients in the soil and making them more available for plants. It also helps to chelate minerals, making them easier for plants to absorb. This means that even if your soil contains an adequate amount of nutrients, they may not be readily accessible to plants without the presence of humic acid.

In addition to its nutrient-enhancing properties, humic acid can improve soil structure by promoting the formation of aggregates. This, in turn, improves soil aeration, drainage, and water-holding capacity.

To provide the benefits of humus and humic acid to your lawn or garden, consider incorporating organic matter, such as compost or aged manure, into your soil. You can also find humus or humic acid-based products, such as granular or liquid fertilizers, that you can apply directly to your lawn or garden.

In conclusion, humus and humic acid are both valuable substances for maintaining healthy soil and promoting optimal plant growth. Whether you're a homeowner working on your lawn or a professional landscaper, understanding the role of humus and humic acid can help you make informed decisions about your lawn care practices.