We have been working with CBD seeds for just two years. Prior to that, we were grateful to just have cuttings of a few different ratios of CBD:THC. Despite what effect terpenes may have, the CBD:THC ratio is a powerful determinant of clinical effects as well as the level of psychoactivity.

So, two years ago I was fortunate enough to get a little container full of Lawrence Ringo’s 3rd generation of Harle-tsu. We have taken these two more generations and have noted the following.

1. We know that CBD is a recessive gene and THC is dominant. We did not note this, we know it from others.

2. We bred a male 25:1, or “wide ratio” cannabis plant it’s “sister” wide ratio CBD.

3. >95 % of the seeds generated from this cross were wide ratio. Some as high as 32:1

4. When friends have ordered standard SOHUM seeds from Ringo’s collective they find that 70% or so of the seeds are rich in cvd, or have CBD levels >> THC.

We would expect all of this if we assume that:

1. Narrow ratios are present when one allele or gene for CBD is present

2. Wide ratios are present when both “cannabinoid alleles” are CBD

3. It is VERY, VERY rare to see a plant test at 5:1 or 10:1. Personally, I have never seen it, but I imagine there are genes that do not have complete penetrance. HOWEVER, in general, one CBD allele and you get strains that are around 1:1 or 2:1; two alleles and you get the wide ratios of Charlotte and many others.


Allan Frankel, MD Dr Allan Frankel is one of the few physicians in the US who truly understands Cannabis as a medicine. All treatments suggested have been well studied. Every patient seen by Dr Frankel is given a personally created Treatment Plan created with the patient's specific issues defined. Plant medicine requires "tuning" of the dosing. Dr Frankel works with his patients thru a messaging portal. The use of this portal, allows quick and simple follow up contact with Dr Frankel. Patients are not charged for these messages, as this is how Dr Frankel has learned what he has learned. Follow up appointments in person or by phone/video are also available when needed

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