"Seeds for CBD-rich plants were extremely difficult to find," he recounts.
Half of the tens of thousands of plants growing here at any one time are CBD-rich, half THC-rich.
But thanks to the promise CBD has shown in a range of therapies under investigation, Potter's CBD-rich crop is potentially much more valuable than the THC crop.
When he tried to find CBD-rich varieties with which to conduct medical research in the late 90s, 97% of commercially available seedlings created THC-dominant plants.
Supposedly CBD-rich cannabis products are now being sold by "therapeutic" retailers from Amsterdam to San Francisco – and if more research finds CBD-rich cannabis really is significantly safer than skunk, it could strengthen the case for the legalisation and regulation of cannabis products.
Back in October, before Justine's first dose of CBD-rich cannabis, seizures were a daily occurrence.
Lawrence Ringo, a cannabis grower with the Southern Humboldt Seed Collective, supported early efforts to cultivate CBD-rich cannabis plants.
To date, 23 states have legalized marijuana for medical purposes and an additional 12 have legalized the limited medical use of CBD-rich strains of marijuana.
And it had important therapeutic benefits of its own (as indicated by the MS patients' strong preference for CBD-rich hash from Morocco as an anti-spasmodic).
Along the roadside near the farm, there are tall "Santhica 27" plants, and behind them some "Finola the most CBD-rich of all the EU-approved hemp strains.
A followup to the CNN piece depicted the struggles of parents of children with a seizure condition called Dravet syndrome, who moved their families to Colorado in order to get CBD-rich marijuana legally.
