Minor cannabinoids may be the future of cannabis/hemp cultivation. In part 1 of this series, we discussed chemovars that produce desirable but the uncommon minor cannabinoids cannabigerol (CBG) and tetrahydrocannabivarin (THCv). Here, we’ll look at even less commonly available cannabinoids and the unique cultivars that maximize their production. Breeders, take note: these minor cannabinoids represent budding opportunities.
Cannabinol (CBN) is a degradation metabolite of delta-9-tetrahydrocannabinol (THC).  Although estimated at 90% less psychotropic than THC , CBN has demonstrated analgesic , antibacterial (against MRSA) , and appetite enhancement properties . Combined with THC, it has been shown to promote sedation.  It is therefore a minor cannabinoid of interest.
Over-ripening cultivars with high THC is one strategy to increase CBN.  Although genetics targeting CBN are not generally available, Leafly reports that several chemovars generate higher levels naturally, namely Animal Cookies and Ace of Spades. CBN-rich hemp oil is also available.
Cannabichromene (CBC) has been linked to antidepressant effects  and may boost adult neural stem progenitor cells , among other benefits. In the 1970s, researchers measured relatively large quantities (up to 64%) of CBC in landrace chemovars from different geographic regions.  Like cannabidiol (CBD) and THC, CBC is formed from cannabigerolic acid through its own synthase. 
Cannabidivarin (CBDv) is a CBD homologue with potentially therapeutic anticonvulsant properties.  GW Pharmaceuticals holds a patent on its use for treatment of “epilepsy and specifically for the control of generalised or temporal lobe seizures.”
Cannabis landrace plants from India (specifically, so called “indica” phenotypes) have been found to contain notable levels of CBDv.  Today, Elite Seeds produces Sedativa CBDv:CBD with one of the highest ratios of CBDv on the market (7:8).
As we know, cultivators have emphasized THC for some years. But the power to dial genetics toward minor cannabinoids and convert them into major cannabinoids may define the next generation of great cannabis cultivators.
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