Hemp as an Indicator Species: Mapping the Future of Bio-Based Building

Hemp as an Indicator Species: Mapping the Future of Bio-Based Building

Author: Eric Hurlock, Digital Editor February 19, 2026 Duration: 44:53

This week on the Hemp Show, we widen the lens. Hemp is more than a crop — it's part of a larger material system that connects farms, forests, manufacturers, builders and cities.

Architect and urban researcher Kaja Kühl joins the podcast to explain why she calls hemp and straw "indicator species" — materials that signal the health of a regional building ecosystem. Through her Bio-Based Materials & Construction Resources Map, she has been documenting the farms, processors and builders already working across the Northeast.

In this conversation, we explore what it would take to scale regenerative construction from rural landscapes into dense urban markets — and why regional supply chains may matter more than centralized industrial models.

We discuss:

• Hempcrete as a carbon-storing wall system

• Why moisture regulation and indoor air quality may be hemp's most overlooked strengths

• Straw panel manufacturing and collaborative scaling models

• The advantages — and challenges — of building in a dense Northeastern region

• Housing as long-term carbon storage infrastructure

Kühl also reflects on building two carbon-zero hemp homes in New York's Hudson Valley and what she learned working alongside early-stage material startups.

As federal climate policy shifts, atmospheric carbon does not. If emissions oversight weakens, land-based carbon strategies — including fiber crops like hemp — only grow more consequential.

This episode situates hemp inside a broader conversation about how we build, where materials come from and how regional economies can store carbon in the walls around us.

News Nuggets

Farm Bill / Hemp Language

U.S. House Agriculture Committee – Farm, Food and National Security Act of 2026 (Draft Bill Information)

National Hemp Association – Industry Response & Policy Updates

USDA Hemp Production Program

EPA Endangerment Finding

EPA 2009 Endangerment Finding (Clean Air Act)

Clean Air Act Overview (EPA)

Learn More

You Are the City – Kaja Kühl's Practice

Bio-Based Materials & Construction Resources Map

City College of New York – Architecture

Columbia University GSAPP

Bio-Based Materials Collective

https://biobasedcollective.org

Thanks to our Sponsor

IND HEMP 


There’s a quiet revolution happening in fields and factories, and it’s centered on a single, versatile plant. Industrial Hemp Podcast, guided by Eric Hurlock, the Digital Editor at Lancaster Farming, moves beyond the headlines to explore what’s actually happening on the ground. This isn’t just theoretical discussion; it’s a direct line to the people driving the industry forward. Each episode features conversations with the farmers who are planting and harvesting these crops, facing very real agronomic challenges and opportunities. You’ll also hear from researchers, processors, and policy experts who are shaping the future of hemp for fiber, grain, and other industrial applications. The dialogue digs into the practicalities-from planting techniques and harvesting equipment to market trends, regulatory hurdles, and technological innovations that are changing the game. It’s a clear-eyed look at an agricultural sector finding its footing, reported by journalists with deep roots in farming communities. For anyone curious about the business, science, and sheer hard work behind industrial hemp, this podcast serves as an essential, grounded resource. Tune in for honest talk that cuts through the hype and gets to the root of this growing field.
Author: Language: en-us Episodes: 100

Industrial Hemp Podcast
Podcast Episodes
10th Annual NoCo Hemp Expo Gathers Many Voices [not-audio_url] [/not-audio_url]

Duration: 59:12
This week's hemp podcast is a recap of the 10th annual NoCo Hemp Expo in Estes Park, Colorado, April 11-13, where industry stakeholders gathered to collaborate, commiserate and celebrate the state of hemp in 2024. The ep…
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On this week's hemp podcast, Lancaster Farming talks to Steve Groff from Cedar Meadow Farm in Holtwood, Lancaster County, where he is getting ready to plant 70 acres of industrial hemp. "This year it's all fiber. And we'…
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In this week's hemp podcast, Lancaster Farming speaks with Ken Meyer, beekeeper and hemp processor from South Dakota. Meyer and his family run a fourth-generation beekeeping business as well as the state's first industri…
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Hemp Podcast guest James "Jimmy" Cottrell II is a fourth-generation paper maker at family-owned Cottrell Paper in Saratoga County, New York. He started cutting the grass in high school and began working at the mill after…
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Duration: 29:32
This is a special weekend edition of the Hemp Podcast. Lancaster Farming speaks with Geoff Whaling, chair of the National Hemp Association. I will update the details of this episode soon. For now, enjoy the audio. Learn…
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Duration: 1:01:38
Jean Lotus is an award-winning investigative journalist and publisher of HempBuild Magazine. She is based in Fort Collins, Colorado, where she has been covering the hemp industry since 2017, and is our guest on this week…

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