Our Sources

European Commission, DG SANTE — EU Coordinated Action "From the Hives" (2021–2022). 320 honey consignments from 20 countries tested; 147 (46%) suspected of adulteration. 74% of samples from China were flagged as suspicious (66 of 89 Chinese consignments). Published March 2023.
food.ec.europa.eu — From the Hives

UMFHA (Unique Manuka Factor Honey Association) — Updated industry estimates indicate NZ produces approximately 1,700 tonnes of genuine Manuka honey annually, while an estimated 50,000 tonnes is marketed globally as Manuka — a 29x gap. Earlier NZ Herald reporting cited 10,000 tonnes.
umf.org.nz · nzherald.co.nz

Ministry for Primary Industries — Fines totalling $372,500 imposed in first NZ honey adulteration case. 14.5 tonnes of adulterated honey; synthetic MGO and DHA added.
mpi.govt.nz

Nikhat, S., & Fazil, M. (2022). "Overview of various aspects of Manuka honey, including its properties, uses, and recent findings." Avicenna Journal of Phytomedicine. Documents honey's status as the world's third most adulterated food product.

"Chemical Elements and the Quality of Mānuka Honey" — peer-reviewed study showing soil nitrate is negatively correlated with MGO (r = −0.88, p < 0.05). Nutrient-poor soils produce higher-potency honey.
PMC8303644 — National Library of Medicine

"Genotype, Floral Stage, and Water Stress Effects on Manuka Nectar" — research on how environmental stress affects DHA and MGO levels in Manuka nectar.
PMC5838834 — National Library of Medicine

Taylor & Francis — Research on how soil conditions influence Manuka plant growth and nectar composition.
doi: 10.1080/0028825X.2016.1247732

Te Ara — Encyclopedia of New Zealand. Canterbury Plains geological formation from glacial alluvial deposits; soil composition and characteristics.
teara.govt.nz

Environment Canterbury — Data on the Rakaia and Rangitata river systems, upper catchment conditions, and Ashburton zone biodiversity.
ecan.govt.nz

Canterbury receives approximately 2,786 hours of sunshine annually — among the highest in New Zealand.
Weather Spark · Climate-Data.org

Bell, C., & Grainger, M.N.C. (2023). "Authentication testing methodologies for New Zealand Manuka honey." Food Chemistry. Confirms authentic Manuka contains unique biomarkers including Leptosperin, 2'-methoxyacetophenone, and methylglyoxal.

ScienceDirect (2024). "Advancing fraud detection in New Zealand Manuka honey: Integrating hyperspectral imaging and GANomaly-based one-class classification." Peer-reviewed research on advanced authentication methods.

Ministry for Primary Industries — "Ensuring mānuka honey is authentic." New Zealand's science-based export definition requires testing for 4 chemical markers + 1 DNA marker.
mpi.govt.nz — Mānuka honey testing

Unique Mānuka Factor Honey Association — UMF grading assesses MGO, Leptosperin, DHA, and HMF. Leptosperin is a recognised authenticity marker for genuine Mānuka honey.
umf.org.nz

UMF Honey Association and Department of Conservation — South Island Manuka flowering season runs approximately 4–6 weeks, December to February.
umf.org.nz · doc.govt.nz

Midlands Apiaries — one of the largest honey operations on the South Island, built on the legacy of Symes Apiaries. Ashburton-based, purpose-built extraction facility with in-house laboratory testing.
midlandsnz.com