That “Helpful” Fungi You Bought for Your Garden? New Research Says It’s Probably a Scam.

If you’re a savvy home gardener, you’ve definitely seen the products. They come in slick packaging, covered in scientific-looking diagrams of plant roots. They promise to inoculate your raised beds with “beneficial” mycorrhizal fungi , creating a vast, symbiotic root network that will supercharge your vegetables.

This “magic” soil additive has become a billion-dollar industry , and it’s all built on a solid scientific premise: arbuscular mycorrhizal fungi (AMF) are amazing. They do form partnerships with most garden plants, acting as a secondary root system to fetch water and nutrients.