About
We help you build your lab, then hand you the keys.
Most cannabis consultants create dependency. You keep paying them, you keep buying their clones, you never learn to do it yourself. We took the opposite approach.
What we actually do
Design the lab. Guide the build. Train the team. Step back.
Collective Herb Consulting is a tissue culture consulting team that designs, builds, and launches in-house cannabis tissue culture labs for licensed commercial cultivators and MSOs, then supports them with software and training. From clean-room design to your first Gen-0 harvest, we guide the full build: lab design and layout, equipment sourcing, working with your contractors on construction, hands-on training, protocol development, and commissioning. We also recover contaminated or underperforming labs and optimize existing cultivation systems.
Every lab we help build comes with turnkey SOPs, contamination tracking, and a trained team ready to produce clean genetics independently. Every engagement is designed to make you self-sufficient. We design your lab, train your team, document every protocol, and then step back. You run it. You own it. You profit from it.
The deliverable
The lab we build.
Design the lab, guide the build, train your team, then hand you a finished, running tissue culture lab.
Founder and lead
Who's behind it.
David Stormzand started as a grower in Michigan's early medical market in 2010, moved into commercial cultivation in Colorado, and launched new facilities in Oregon and California, including Curaleaf's first recreational operation and Gold Flora's 20,000 square foot Southern California indoor facility. He has been on the cultivation floor, in the tissue culture lab, and in the boardroom.
In 2021 he brought that experience into tissue culture as Director of Customer Success at Conception Nurseries, one of the largest cannabis tissue culture labs in the country. He worked in the lab alongside the lab director, ran plant pathology testing, and took in client cultivars for genetic banking and HLVd cleanup. He also oversaw more than 150 client facility visits and improved how growers received and acclimated the lab's plants.
Seeing that growers needed tissue culture in-house, he founded Collective Herb in 2023. It has grown from one operator into a team that designs, builds, and supports labs across the country, including the in-house lab at Story Cannabis in Maryland, which now replaces mothers with Gen-0 plants, keeps cold storage backups of more than 120 cultivars, and is run entirely by the team David trained. David is founder and lead; every client gets the whole bench, not a single consultant.
He has trained dozens of teams on sterile technique, micropropagation, and genetics banking. He knows what works at scale because he has done it at scale.
- 15+ years cannabis cultivation
- 5+ years hands-on tissue culture
- 150+ client facility visits
- CA · CO · OR · MI · MD operations experience
Why it matters
The growers who control their genetics are the ones scaling profitably.
Clean genetics are not optional anymore. HLVd is everywhere, clone vendors are inconsistent, and mother rooms are expensive and vulnerable. The growers who control their own genetics pipeline are the ones scaling profitably. We help you become one of them.
On the bench
In the lab, doing the work.
Proof