40 Under 40, Class of 2018

Mark Frey


Gulley Greenhouse

Job Title



  • Grows and oversees stock plants for perennial cutting production during the fall and winter months. Responsible for 57,600 square feet of cold frames for annual production in spring and summer.
  • Member of Plant Select Organization. Works with colleagues from Denver Botanic Gardens and Colorado State University on new plant introductions and ways to optimize stock plant production.


In His S-s-s-pare Time: Mark is an aspiring herpetologist. He currently owns two salamanders and one bearded dragon.

Fun Facts

Down but Not Out In 2010, his family was affected by the Fourmile Canyon Fire near Boulder, Colorado. His family home was destroyed by the 11-day wildfire, but they have since rebuilt a cabin where the home once was.

Latest Photos see all »

GPN recognizes 40 industry professionals under the age of 40 who are helping to determine the future of the horticulture industry. These individuals are today’s movers and shakers who are already setting the pace for tomorrow.
Ben Vliestra
Sidney Phelps
Jennifer Moss
Daniel Norden
W. Garrett Owen
Jessica Montgomery
Elien Peters
Rose Oberholzer
Nikki Melin

July 2020 GPN
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