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New Tech Uses Fungi to Supercharge Forest Growth

We’re excited to announce that the Arbor Day Impact Fund’s most recent beneficiary has created a new technology that makes trees grow faster.

At one time, tree planting was as simple as digging a hole and picking up a shovel. In the modern era, greater science has given us greater insight into the immense power of trees to boost climate, human and ecosystem resilience — consequently changing our approach to planting them. Now, before we ever pick up a shovel, we’ve gathered data and research that helps us ensure we’re planting the right trees in the right places to do the most good for people and the planet.

Still, we know our current methodologies might one day change again — so, innovation and invention are key to widening the impact of tree planting. That’s why, at the Arbor Day Foundation, we felt a responsibility to be a leading driver of progress. Our Impact Fund, launched in 2024, was created to empower changemakers with the resources they need to bring groundbreaking, nature-based solutions to our interconnected global crises to fruition.

We’re excited to announce that our most recent investment will support a new technology that makes trees grow faster.

Developed by Austin, Texas-based startup Funga PBC, the technology taps into the underground microbiome and uses fungi to supercharge tree growth. Essentially, Funga uses advanced tools to study soil samples and identify where forest fungal microbiomes have been severely degraded over time by careless land-management practices. Funga’s data platform then identifies a wild, biodiverse fungal community that best reflects the native fungal community of the depleted area; then, they reintroduce this fungal community to young tree seedlings while they're still in the nursery — allowing the fungi to establish on the tree's roots before planting.

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When trees are reconnected with these symbiotic partners underground, they can better access growth-promoting resources in the soil. Early results have shown that Funga’s inoculants can increase survival rates and boost tree growth by an average of 30 percent. It's incredible work that has the potential to accelerate our world’s access to healthy forests and the many benefits they provide.

In the face of mounting climate challenges, there’s a tremendous urgency to grow forests as a way of supporting biodiversity and water quality, and slowing the impacts of increasingly high temperatures. By embracing science-driven approaches such as Funga’s method, we can enhance the effectiveness of reforestation and foster more resilient ecosystems that can stand up to the challenges of the future.

Over the last five decades, how the Arbor Day Foundation plants trees has evolved. But our purpose has always stayed the same: We want to make our world better with trees.

We’re excited to partner with innovators like Funga and support them in their mission to replenish the power of nature to cultivate a thriving future for us all.