Otto II ~ High CBD Seed

January 23, 2015 by admin

The Otto seed line began in 2009 with an unknown seed sample given to me by Bob Winnicki, founder of Full Spectrum Labs.

This original material was highly variable, but it did contain a number of high CBD:THC ratio plants that became the early breeding parents of today’s Otto II.


The Otto II is a hybrid high-CBD hemp seed developed in Colorado. Otto II is stable and breeds true for high-ratio CBD expression. Otto II is excellent for use in botanical extraction applications.

The plants are vigorous and can be quite large. Flowering is complete indoors at 70-77 days. Grown in sunlight along Colorado’s Front Range, flowers reach their peak resin content in late September to early October..

When Otto II is grown as industrial hemp we recommended that Δ9-THC levels are assayed 3 to 5 weeks prior to anticipated harvest to verify that the crop meets the statute for maximum delta9-THC levels. Testing is crucial during periods of unusually hot weather and drought conditions which may increase total Δ9-THC levels in hemp plants.

The Otto II seed is being released today and will be available for purchase while supplies last.

Otto II Release

January 21, 2015 by admin

Otto II will be released Friday January 23, 2015 at noon.

The seed is stable and breeds true for Type 3. Until it’s gone.

Limited Release of Improved Otto #1 Seed

November 18, 2014 by admin

I am offering a small quantity of an improved generation of the Otto #1 seed. They will go on sale later today and will remain so until they are gone.

Centennial Now Offering In-house Analytical Services

October 25, 2014 by admin

Starting Monday October 27 Centennial Seeds will begin offering in-house analysis of cannabis and hemp via gas chromatograph.

We believe that testing for the industrial hemp industry and for non-MED cannabis growers is an essential service that is sorely needed.


Initially we are offering testing for CDA registered industrial hemp developers/farmers. In addition we will provide this service to our seed customers, testing our own strains at a special discount.

Look to Centennial to provide quick and accurate quantitative analysis of select cannabinoids at a fair price.

Contact us at 720-961-0525 for more info.

Otto #2 Update

July 24, 2014 by admin

I’ve decided to run a more complete, extended trial on this seed generation to better understand the ratios of the secondary compounds CBD and THC produced by these seeds.

I know many of you are anxious to get your hands on the Otto #2 and i apologize for the delay in getting these to you. Please understand that my desire is to produce a reliable high-CBD seed of the highest quality possible. -Ben

Long Overdue Update

June 18, 2014 by admin

They say, “the busiest man gets the most done”. Right now I feel like that man.


There was a time when I would update this site more frequently. Over the course of this year my duties and responsibilities have increased to the point where it is no longer possible. I have a slight lull in the action today so i thought it best that I post an update.

Hemp and Hemp Seed

I am trialing several unknown varieties of industrial hemp seed this season. These industrial hemp trials are registered with the  the Colorado Department of Agriculture as research and development fields.

One of the terms of the R&D registration is that the resulting crops cannot be sold. This includes seed. Having said that, I will not have industrial hemp seed for sale from these trials.

The Otto #1 High-CBD Variety

As some of you know I have spent the last year producing a new generation of my Otto #1 seed. Otto #1 is my high-CBD/low-THC variety. It has been produced since 2012 and is being used in production by a growing number of formulators and marijuana producers.

This next-generation seed is dubbed Otto #2 and is the result of careful technology-assisted selections across large numbers of plants. The Otto #2 seed is currently in trials and, if it meets expectations, there will be a very limited amount of the Otto #2 seed for sale sometime in the next 4 to 6 weeks.

The Cannabis Genomic Research Initiative (CGRI)

The CGRI is moving forward and continues to gain momentum. The first generation of seed to be studied is in its final days before harvest. This seed will be used to create a second, more varied generation that will be become the base layers for the cannabis gonomic map.

The people from the Kane Laboratory and myself are moving this research forward as quickly as we are able. What we lack is funding and so far there has been very little support outside of what we’ve each contributed. This needs to change.

Stay tuned for an announcement for a private CGRI fund-raiser this summer!

Thanks for your support. -Ben

Update: Ultra-Small Batch Halcyon Release

March 22, 2014 by admin

The Halcyon seed is sold out! Thanks to the wonderful people that stepped up and bought this seed. Your support has helped move the CGRI forward. You rock! -Ben

Ultra-Small Batch Release ~ The Halcyon

December 28, 2013 by admin

halcyon_projectThe Halcyon is an F1 hybrid based on an Afghan Kush female and a Colombian male. I first made this seed in late 2012. It was trialed in 2013 and is now being released.

The cross produces a vigorous, uniform F1 generation that is highly resinous and beautifully fragrant. The flowers are very potent and produce a strong effect with an unusually clear head.

The fragrance is a blend of both lines, the sweet, syrupy ‘candy’ notes of the Kush combining with the more tart and piney fragrance of the Colombian. Based on fragrance alone the cross is unique and enjoyable. Add to that the wonderfully potent character and you’ve got a winner.

As I wrote earlier I will package exactly 100 tins of this seed, 14 seeds per tin, and offer them for sale. 100% of the proceeds will go to support the Cannabis Genomic Research Initiative to support our research goals.

The work being undertaken is groundbreaking in our industry. The knowledge and the know-how that will result from this project will spawn a wave of innovation in the Cannabis industry unlike anything we’ve ever witnessed.

If you’ve taken the time to read this far and you believe in advancing the public understanding of this crop please take a second and share this article or recommend it to a friend.

Remember, 100% of the proceeds of the Halcyon will go to support the CGRI. Can I count on your support? I hope so.


Ben Holmes


Centennial Seeds


Colorado Researchers Seek to Map the Cannabis Genome

December 23, 2013 by admin

A research team at the University of Colorado at Boulder has begun a landmark project to build an ultra-high density genetic map of the Cannabis genus, placing tens of thousands of genes onto chromosomal positions and will use these resources to identify important genomic regions underlying variation in traits such as the production of secondary compounds, biomass accumulation, fiber quality and quantity, and other economically valuable traits.

This project will positively impact society through improvements in Cannabis varieties useful for medicine, bioenergy production and textiles. This investigation is pioneering in asking genomic questions dealing with domestication, coevolution, genotypic and phenotypic traits and inheritance in the genus Cannabis.

The project is known as The Cannabis Genomic Research Initiative or ‘CGRI’ and the work is being conducted at The Kane Lab at CU. Dr. Nolan Kane and his team have extensive experience in addressing these and related questions with genomic and bioinformatic approaches, with over 50 scientific publications.

This research will answer fundamental questions about the crop and its characteristics and will put Colorado’s university research of Cannabis ahead of the entire world.

I’ve been asked to play a role in this project by providing heirloom seed stock as well as cultivation and analytical work to support the project. I have also taken it upon myself to assist in fund raising efforts to help pay for this groundbreaking work.

To help accomplish this goal I will be making available for sale a very limited quantity of a hybrid seed I call The Halcyon. The seed will be limited to 100 packs priced at $100 each. Centennial Seeds will donate 100% of the proceeds from this seed batch to the CGRI.

I’ve met a lot of wonderful people since I’ve been in the seed business and I have no doubt that there are 100 of you that will step up to support this project. The Halcyon seed will be packaged and ready by January 1st. Please consider making a $100 donation to this courageous effort.

Thank you for your support.

Ben Holmes, Founder

Centennial Seeds

Origins of a CBD Collaboration

December 20, 2013 by admin

Earlier this year I contributed a cut of Harlequin to a seed project run by my friend Laci.

Harlequin is a clone-only CBD line from somewhere in the West. Clone-only means that it is a living clone derived from an individual plant. Another way to say this is that no seed version of Harlequin has ever to my knowledge been made available. It is notoriously low-yielding and based on the analytics I could find online there seem to be several chemotypes out there.

My friend Laci put together a selfing project of a very resinous, very high CBD plant, the goal being to stabilize that special plant in seed form. I saw this as an opportunity to outcross the plant and I just happened to have Harlequin sitting around sponging off my fertilizer and electricity.

I have a good recipe for silver thiosulphate solution and the chemicals needed to do this so we made a batch of STS for the reversal phase. We divided the seeds up, and now we each have some interesting new raw material to add to our development programs.

I’ve yet to grow these seeds out but I am very interested in the outcomes. In particular I’m interested to see what each plant contributes to the cross. It’s important also, I think, to stabilize the Harlequin traits in seed form, if not directly by selfing it, then at least outcrossed in this fashion to a similar but unrelated line.

I’m working hard to drastically upgrade my analytical capabilities. Once I have those tools in place I will be able to quickly identify the highly desirable types.

I cannot stress enough the importance of these types of collaborations to the quality and diversity of the seed supply in Colorado.