Kang County Gastrodia Elata Geographical Indication Herb Base

ang County, Longnan City, Gansu Province, located in the hinterland of the Qinba Mountains ecological shelterbelt, has built a standardized Geographical indication herb base featured with authentic Kang County Gastrodia elata.

Kang County Gastrodia elata was officially approved as a national geographical indication protected product in 2025. Only Gastrodia elata planted, managed, harvested and processed within the administrative territory of Kang County is legally permitted to use the exclusive geographical indication logo. Protected by geographical indication intellectual property rights, the base combines under-forest wild-simulated cultivation, full-process traceability and standardized management, forming a complete quality control system centered on origin protection. It is the core Daodi medicinal material production base of Gastrodia elata in southern Gansu.

1. Geographical Indication Certification Timeline & Qualifications

1. 2022: Finish origin regional delineation, ecological environment monitoring and quality characteristic research of Kang County Gastrodia elata, lay technical foundation for geographical indication declaration.
2. 2025: Obtain national geographical indication product protection approval, clarify the geographical protection scope covering all 13 towns of Kang County.
3. Subsequent supporting certifications: Core planting zones have passed organic certification, partial demonstration areas implement Chinese medicinal herb GAP management standards, and Kang County Gastrodia elata is included in the high-quality agricultural brand catalogue Ganwei.
4. Access control mechanism: External gastrodia raw materials are prohibited from being labeled as Kang County geographical indication products to safeguard the reputation of origin medicinal materials.

2. Unique Terroir for Geographical Indication Formation

The exclusive mountain ecological environment of Kang County constitutes the core condition for winning geographical indication protection:

• Ecology: Forest coverage exceeds 76%, free from industrial pollution; natural oak broad-leaved forests form 70%–85% canopy shade, perfectly matching the shade-loving growth habit of gastrodia.
• Climate: Transitional climate between subtropical and temperate zones, mild temperature, abundant scattered rainfall, slow growth cycle of gastrodia facilitates continuous accumulation of gastrodin and active pharmaceutical ingredients.
• Soil: Selenium-rich humus soil formed by decaying oak leaves, rich in beneficial microorganisms. The gastrodin content of local authentic gastrodia can reach 1.11%, far exceeding the pharmacopoeia standard of 0.5%, with compact tubers and strong natural medicinal fragrance, forming exclusive quality characteristics different from gastrodia in other producing areas.

3. Unified Planting Rules Restricted by Geographical Indication Management

All planting areas inside the geographical indication herb base implement unified origin standards to guarantee consistent quality of geographical indication gastrodia:

1. Unified germplasm regulation: Only local superior varieties (black gastrodia, red gastrodia) are allowed for cultivation; foreign hybrid seedlings are forbidden to avoid germplasm variation.
2. Dominant under-forest wild simulated planting: Adopt forest bionic cultivation instead of greenhouse intensive planting, forbid excessive chemical fertilizers and prohibited pesticides, keep the natural medicinal properties of Daodi gastrodia.
3. Unified harvesting & processing norms: Stipulate unified picking season, low-sulfur drying processing technology; unqualified fresh gastrodia shall be eliminated and cannot enter the geographical indication product processing system.
4. Whole-chain traceability: Each batch of geographical indication gastrodia is bound with exclusive QR traceability code, covering seedling source, planting archives, testing reports and processing records, realizing traceability from woodland to sales terminal.

4. Base Scale & Industrial Value

At present, the planting area of geographical indication-certified Kang County Gastrodia elata exceeds 10,000 mu, and the planned planting scale will expand to 130,000 mu during 2026–2030.

The operation mode of Leading Enterprise + Geographical Indication Base + Cooperatives + Farmers is adopted. The local government uniformly manages the authorization of geographical indication marks, purchases qualified gastrodia at guaranteed prices in accordance with origin standards, drives more than 22,00 local farming households to engage in gastrodia industry, and realizes the organic integration of ecological protection and targeted income increase for mountain villagers.

Relying on geographical indication brand premium, Kang County Gastrodia elata gains independent import and export qualifications, selling well across the country and exported to Southeast Asia, Central Asia and other regions.

5. Functional Significance of the Geographical Indication Herb Base

1. Brand protection: National geographical indication protection legally defines the origin boundary, effectively prevents counterfeit products from counterfeiting Kang County Gastrodia elata, and protects the origin brand value.
2. Quality stabilization: Unified geographical indication production standards lock the high-quality characteristics of high gastrodin content in Kang County gastrodia, widely recognized by pharmaceutical factories and organic health product markets.
3. Demonstration effect: Combine geographical indication protection with under-forest ecological planting, create a replicable development mode for geographical indication Daodi medicinal herbs in the mountainous Qinba area of western China.

Conclusion

With national geographical indication product protection authorized in 2025, Kang County has built a standardized geographical indication herb base for Gastrodia elata bounded by origin scope and production specifications. Supported by unique Qinba mountain terroir and standardized ecological planting technology, this base inherits the medicinal quality of Gansu Daodi gastrodia, and becomes a characteristic landmark geographical medicinal herb base in Longnan, Gansu.