Episode Details

(Image: Supplied)

In this episode of Humans of Agriculture, Oli sits down with Sarah McDonald, Head of Sustainable Impact at Zentera (formerly New Zealand Merino) to unpack the reality behind sustainable wool.

Sarah sits at the intersection of growers and global brands, her role is to translate what’s happening on farm into credible, measurable data that brands can trust and consumers can believe. From regenerative frameworks and biodiversity metrics to digital traceability and global legislation, this conversation explores how wool is being repositioned in a rapidly evolving sustainability landscape.

Sarah unpacks the tensions between profitability and expectations, the challenge of comparing natural and synthetic fibres, and why clear communication across the value chain is more important than ever.

This is a deep look into the systems, science and strategy shaping the future of wool.

Key insights from the conversation

• Why wool sits at the centre of a complex global system connecting growers brands and sustainability expectations across continents
• What ZQ and ZQ+ actually measure on farm from biodiversity and soil health to credible market ready data
• The balancing act between farmers and brands navigating productivity and rising sustainability demands
• Why sustainability is really about risk driven by banks insurers and legislation more than consumers
• The challenge of measuring impact in agriculture with seasonality and long timelines versus short term expectations
• How technology is transforming traceability by tracking wool from farm to garment using digital systems
• Natural versus synthetic fibres and why emissions accounting can disadvantage wool

Chapters:

00:00 Intro & episode overview
02:15 Sarah’s role & measuring on-farm sustainability
03:13 What Zentera (NZ Merino) does
04:18 Bridging farmers and global brands
05:07 Farm reality vs global expectations
07:21 Sustainability timelines: short vs long term
08:15 How sustainability is measured on farm
09:35 Global pressure, risk & regulation
12:16 Differences across NZ, AUS & South Africa
13:53 The challenge of data collection
15:17 Food vs fashion sustainability gap
17:42 Tech, traceability & supply chains
20:48 Natural vs synthetic fibres debate
23:25 Careers in sustainability & Sarah’s journey
29:51 Animal welfare, mulesing & industry pressure
36:43 Outro & closing remarks