SALT LAKE CITY (AP) — An entrepreneurial student who turns worm poop into organic fertilizer targeted for marijuana growers is generating buzz and earning accolades.

Joseph Walker, who’s studying at Brigham Young University, began the company OmniEarth to make fertilizer from worm castings — the technical term for worm poop, The Salt Lake Tribune reported .

Walker, 22, and originally from Eugene, said he became interested in developing an organic fertilizer while working in landscaping and noticing that chemical fertilizers could be a contentious subject. His grandfather suggested worm droppings as a solution.

Image: BYU student Joseph Walker was named the winner of the 2017 Utah Regional Global Student Entrepreneur Awards with his company, OmniEarth, an organic fertilizer company based out of Provo, Utah. A sample is pictured here. He said the largest impact this product is making is in the medical marijuana market. He has formulated an organic fertilizer specific for this industry. Steve Griffin/salt lake tribune photo via ap