13th International Hemp Building Symposium Registration

The 13th International Hemp Building Symposium will take place at the Lower Sioux Indian Reservation near Morton, Minnesota, USA, organised by the International Hemp Building Association (IHBA).

IHBA symposiums are famous for bringing together experts and innovators from around the world to share the latest ideas and projects in hemp construction. It’s also the best place to meet others working in this growing and exciting field. This is the biggest event in the world focused on building with hemp.

The three-day event will include speakers from many countries sharing new research, test results, and real-life building projects. You will also hear from people working with hemp on the ground, sharing their experience from completed or upcoming projects. There will be a site visit to local hemp building projects where you can see for yourself how this sustainable material is being used.

Fifty percent of the profits from the 13th Symposium will be shared with the Lower Sioux Community to help build a community school.

By contributing in this way, we aim to support their vision for education, cultural preservation, and future generations, ensuring that the benefits of the event extend far beyond the symposium itself.

The event is hosted by the Lower Sioux Indian Community, together with Americhanvre, a leading US hemp building company with our main sponsor Ereasy.

This year’s event will be held at Jackpot Junction Casino Hotel at the Lower Sioux Indian Community near Morton and Redwood Falls, Minnesota.

Evening highlights include the symposium dinner with a charity auction benefiting the Lower Sioux School. With profits shared between the International Hemp Building Association and the Lower Sioux Indian Community, this event is not only an opportunity to connect with leaders in the field but also to support sustainable development and the local community.

Full 3 Day Ticket for the 13th International Hemp Building Symposium, October 3-5, 2025 includes three mornings of the symposium with entry to the Prairie Winds exhibitors hall. The hemp building demonstration and the site tour. Three refreshment breaks. Three buffet lunches. The Saturday Symposium Dinner, featuring a charity auction in aid of the Lower Sioux Community School Project MC’d by our special guest Dallas Goldtooth!

Sorry all Ticket Sales are closed Sept 30

Note: Day 2 Saturday Ticket does not include the Symposium Dinner.

Symposium Organiser

A non-profit association founded in 2009 by director Steve Allin author and hemp building consultant, the International Hemp Building Association globally promotes and supports the production and use of all hemp based construction materials and their by-products in a sustainable and bio-regional manner.

Symposium Hosts

Symposium Main Sponsor

EREASY® System High Performance Hempcrete

In 2009, Damien Baumer, a mason by trade, conceived the idea of an interlocking block that could easily be accepted by masons in France. The block was a solution to the problems of thermal bridging, and allowed for a reinforced concrete structure to be cast within it.
With help from his father – who had experience with steel fabrication from his trade as a car body builder – Damien made a mould for the block and then turned his home into a factory producing the new blocks, which was undertaken with the help of his wife Celine and their willing children, making up to fifteen blocks a day. At the same he filed a patent for the block design.
In 2012, the Vicat group came on-board with the idea. This began a collaboration that has resulted in Damien shepherding the further development of the block system, named Biosys® and controlling manufacture until the commercialisation of the system is complete
In 2015 while working on an old farmhouse he began developing a spray application system including a new type of binder and a very fast spray system. The material applied provides a high level of insulation and faster drying time than other products.
Now called the EREASY® system it is used on projects all over Europe and the USA. Damien continues to improve the system with remote control equipment and spray lance design.

Symposium Secondary Sponsors