Meet Our Advisory Team

Dr. Allison Justice, OutCo

Allison graduated from Clemson University with a Ph.D. in Plant and Environmental Science. During her time at Clemson, Allison taught greenhouse management to undergraduate students, where they focused on organic methods and production. Allison’s dissertation involved investigating the effects of a beneficial mycorrhizal type organism (Piriformospora India), where she learned that organic, sustainable growing can be easy, cost-effective, and produce aesthetically pleasing plants when done properly.


Post-graduation Allison developed a system to mass rear beneficial nematodes for commercial use that led her to consult on integrated pest management nationwide. Allison has extensive experience in greenhouse production having helped open and operate her family’s greenhouse business, where they have been growing sustainably for over five years.


As a recent transplant from the ornamental sector of horticulture, Allison understands the importance of growing a high-quality plant organically and at a low input cost. Through research, Allison is elevating the standards of cannabis cultivation both indoors and in greenhouse settings. 

Dr. Justice has been appointed to the California Industrial Hemp Advisory Board, through May of 2020. SpectrumGro is delighted to have Allison as a key member of our Advisory Team.

Harry Resin, High Times Magazine, URB Delivery

Harry Resin has been working in the cannabis industry for close to twenty years as a breeder, grower, writer and entrepreneur. Harry grew up in Amsterdam in the golden age of seed companies and coffeeshops. He was a party in both Delta-9 Labs and The Harvestmen. He was inducted into the High Times Magazine Seed Bank Hall of Fame and won the Sativa Cannabis Cup in Amsterdam in 2009. Additionally, Harry worked in Amsterdam with many of the local coffeeshops to curate their menus as well as covering the local scene for many of the cannabis magazines in publication.  He is a contributor to High Times as well as Cannabis Now Magazine and Testings and Testing.


Harry currently resides in the Bay Area where he has a permitted grow facility and a medical use delivery-only dispensary called URB Delivery. He is a strong advocate for sustainability and is a powerful voice for the SpectrumGro brand.

Jim Hulette, Safe Harbor Patient's Collective 

Jim Hulette is a renowned cannabis cultivator and consultant based in Southern California. For over a decade, he has developed and managed dozens of successful cultivation facilities and has experience with over 20 different cultivars. Jim also spent eight years as Managing Cultivator for Safe Harbor Patients Group, one of the premier medical cannabis dispensaries in Van Nuys, CA. He is known as a go-to resource for large-scale growers looking to build sustainable and efficient systems for both indoor and outdoor use.


Jim has been using SpectrumGro products with his plants for years and is a proud ambassador of the brand.

SpectrumGro is the your source for a broad spectrum of nature's science that improves  the

health and safety in the cannabis industry. We use nature to solve nature's problems. We are a Clean Green Certified™supplier, meaning using our products will help get you as "close as you can get to organic in cannabis."

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