Exclusivity and Royalties

It takes several years to pay off the investment of time and materials that goes into developing new varieties.  Because of this, institutional plant breeders typically seek out monopoly protections in the form of patents or plant variety protection.  We release our new varieties under the OSSI Open Source pledge, so it is possible for competitors to begin offering them very quickly.  I’m not opposed to other companies selling our varieties, but it is important that we make some money on them if the business is to remain viable.  This is not a high volume business, so even a small amount of competition can cut pretty deeply.

Because of this, I request that competitors honor two voluntary practices: an exclusivity period and a 10 year royalty.  To be clear, you are not legally obligated to honor these.  The varieties are open source and there are no legal restrictions on your ability to propagate and sell them.  Almost everything about this business is experimental and this is just one more, a social experiment.  I hope that most of you would not require a lawyer to twist your arm in order to see the sensibility in participating.  I presume that, if you choose to offer our varieties, you would like to see more of them in the future and therefore agree that it is a good idea to help keep us going.

These do not apply if you are selling our varieties for food, only for seed.  I recognize that the dividing line isn’t always completely clear, so just use your best judgement.


The period of time that it takes to pay off a new variety differs between crops.  For potatoes, it is about two years.  For oca and mashua, about three years.  For yacon, it is five years.  For ulluco, it is 15 years (although I hope that will come down in time).  Because of this, I request that you do not sell new varieties for that period of time.  The year that exclusivity ends is printed on the packet and there is also a table below listing the dates for our varieties.

Exclusivity only applies in regions where we sell, which is currently limited to the USA.  If you offer these varieties outside of the USA and do not sell to customers in the USA, then there is no need to observe the exclusivity period.  Realistically, if you are importing our varieties legally to another country in order to sell them, it will probably take longer than the exclusivity period before you can introduce them anyway.


We request a voluntary royalty of 5% of gross sales on our varieties for the 10 years following the end of exclusivity.  Look at this as an investment.  You can bet that I will pay close attention to the needs of anyone who pays us a royalty.  If you want access to new things quickly and want to offer them with my endorsement, 5% seems a small price to pay.  If 5% is too steep though, something is always better than nothing.

There are no rules for how you go about this.  You can keep detailed records or you can make a gross estimate.  You can pay once per quarter, once per year, or whatever makes sense to you.  You can pay more or less than the suggested amount or for more or less than the suggested 10 years.  I have suggested what I think is reasonable, but all the decisions are ultimately up to you.


This table shows the introduction year for Cultivariable Original varieties and the year through which we request exclusivity and royalties.  The introduction year is the first year that the variety was offered for sale without restriction.  In some cases, we offer a variety in limited quantities for testing and evaluation before the introduction year.

Crop Variety Intro. Year Exclusivity Through
Royalty Through
Mashua Ahahawat 2019 2022 2032
Mashua Chockalilum 2019 2022 2032
Mashua Copalis 2015 2018 2028
Mashua Hahamish 2017 2020 2030
Mashua Hoh 2016 2019 2029
Mashua Satsop 2016 2019 2029
Mashua Suqualus 2018 2021 2031
Oca Hyak 2016 2019 2029
Oca Longview 2016 2019 2029
Oca Mocrocks 2015 2018 2028
Oca Redshift 2013 2015 2022
Oca Siwash 2017 2020 2030
Oca Sockeye 2015 2017 2024
Oca Wishkah 2015 2017 2024
Potato Alckee 2015 2017 2027
Potato Calawah 2016 2018 2028
Potato Loowit 2018 2020 2030
Potato Nemah 2017 2019 2029
Potato Rozette 2018 2020 2027
Potato Twanoh 2019 2021 2031
Ulluco Analyde 2016 2031 2041
Ulluco Claquato 2019 2034 2044
Ulluco Humptulips 2016 2031 2041
Ulluco Moclips 2016 2031 2041
Ulluco Neah 2019 2034 2044
Ulluco Queets 2017 2032 2042
Ulluco Taholah 2018 2033 2043
Ulluco Tahuyeh 2019 2034 2044
Ulluco Tatsolo 2019 2034 2044
Yacon Bogachiel 2019 2024 2034
Yacon Kalaloch 2019 2024 2034
Yacon Quinault 2016 2021 2031
Yacon Sol Duc 2018 2023 2033