Mycorrhizal Fungi and Soil Health

By Sophia Martinez · October 15, 2026

The Symbiotic Relationship

Mycorrhizal fungi form partnerships with over 90% of land plants. The fungi extend root systems with microscopic filaments called hyphae that mine nutrients and water from soil far beyond where roots can reach. In exchange, plants provide sugars from photosynthesis.

Types of Mycorrhizae

Arbuscular mycorrhizae (AM): Penetrate root cells, associate with most vegetables and grasses
Ectomycorrhizae: Surround root tips without penetrating, associate with trees like oaks and pines
Ericoid mycorrhizae: Specialized for acid-loving plants like blueberries and rhododendrons

Benefits to Plants

Plants with active mycorrhizal associations show improved phosphorus uptake, drought tolerance, and disease resistance. The fungal network also connects plants, allowing nutrient sharing between individuals.

Supporting Mycorrhizae in Your Garden

Avoid excessive tillage and synthetic phosphorus fertilizers, both of which damage fungal networks. Inoculate transplants with mycorrhizal products when establishing new beds. Maintain living roots in soil year-round with cover crops.

Mycorrhizal Fungi and Soil Health

The Symbiotic Relationship

Types of Mycorrhizae

Benefits to Plants

Supporting Mycorrhizae in Your Garden

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