John Hyslip
40 Under 40, Class of 2022

John Hyslip


Griffin Greenhouse Supply

Job Title

Operations Manager


  • Responsible for overseeing the company’s West Coast Expansion Project, opening two new distribution facilities in Denver, Colorado, and Salem, Oregon, including outfitting both facilities with the necessary sales, operational, and management team members.
  • John is an integral part of managing the company’s entire production flow of supplies and products to ensure that customers/growers receive their supplies.


Book That Makes Him Think: “The Psychopath Test” by Jon Ronson. “It is a stark contrast to how Griffin operates, and quite extreme, but I’ve always enjoyed learning about all different types of business practices and the psychology of the human mind.”

Fun Facts

Quick with a Quiche: John says one of his hidden talents is “the ability to cook the best-tasting quiche, with homemade tart, in the country!”