What is Mycorrhiza and Why is it Important to Developing Healthy Roots?

Mycorrhizal fungi, often referred to as mycorrhizae (my·cor·rhi·za), are responsible for the symbiotic relationship that allows 90% of vascular land plants to thrive. This crucial relationship exists between your plants’ roots and the soil that they draw nutrients from. While you’re paying attention to the health of your plant above ground, mycorrhizae help ensure your roots are healthy and absorbing the nutrients that your soil offers.

What are Mycorrhizae?

According to Merriam-Webster, mycorrhizae are the symbiotic associations of the mycelium of a fungus with the roots of a seed plant. In layman terms, mycorrhizae are used to describe the relationship that mycorrhizal fungi have with your plant’s roots. These fungi are often referred to by their associations, which is why many of us have long referred to the fungi themselves as mycorrhizae.

Traditionally, there were two types of mycorrhizae: ectomycorrhizal and endomycorrhizal: fungi that operate outside of your plants roots (ecto), and those that penetrate the root surface and work symbiotically within the roots (endo). Now, modern science has recognized seven distinct types of mycorrhizae, each performing unique functions related to root development and health of the overall plant.