In short: Glendale Estate is a black tea producer in Coonoor, India, operated by Glenworth Estate Ltd. at an elevation of 1,961 metres and certified by the Ethical Tea Partnership.
Glendale Estate is a tea plantation in Coonoor, part of the Nilgiri district in the southern Indian state of Tamil Nadu. Situated at an altitude of 1,961 metres, the estate is operated by Glenworth Estate Ltd. and produces black tea. The estate holds certification from the Ethical Tea Partnership, though no specific buyer relationships are currently recorded in public trade data.
Terroir & Climate
At 1,961 metres, Glendale Estate occupies a high-elevation site within the Nilgiri hills, a latitude of around 11° north placing it in the tropical belt where altitude plays a pronounced role in moderating temperature. Estates at this elevation in the Nilgiris typically experience cooler nights and reduced diurnal temperature swings compared to lowland plantations, conditions that tend to slow leaf maturation and can contribute to a more measured accumulation of biochemical compounds in the flush.
The Coonoor area generally receives both the south-west and north-east monsoons, sustaining year-round growth cycles common to the Nilgiris. High-altitude sites in this region often contend with mist and cloud cover, which can diffuse sunlight and influence photosynthetic rates. Soils in the Nilgiri uplands are typically well-drained and acidic, characteristics that favour Camellia sinensis cultivation, though the specific soil composition and microclimatic variations at Glendale remain unverified.
Tea Produced
Glendale Estate produces black tea. Nilgiri teas from high-altitude estates are often noted for a brisk, clean cup character with moderate body and a tendency toward bright, sometimes floral or fruity top notes—qualities that have made the region a supplier to both blending houses and the speciality segment. The pronounced elevation at Glendale would typically be associated with slower withering and oxidation, which can encourage aromatic complexity, though individual garden practices and seasonal variation will influence the final profile. Without recorded buyer specifications or auction notes, the precise style and market positioning of Glendale's output remain unverified.
Operator
Glendale Estate is operated by Glenworth Estate Ltd. No other estates operated by this company are currently recorded in our directory, suggesting either a single-property focus or limited public visibility of any sister holdings in trade records.
Certifications & Ethics
Glendale Estate is certified by the Ethical Tea Partnership, an industry body that requires member estates to meet standards covering labour rights, health and safety, and environmental stewardship. ETP certification involves periodic audits and a commitment to continuous improvement, offering buyers a degree of assurance regarding working conditions and estate management practices, and providing a framework for estate-level accountability in the supply chain.
Location & Neighbouring Estates
Glendale Estate lies at 11.4235, 76.8639 in Coonoor, India. Its 1961 m elevation is the 15th highest of 250 estates we map in India. The nearest estates in the TeaTrade directory, measured point-to-point from these coordinates, are:
- Havukal Estate — under 1 km away · Kotagiri
- Kotada Tea Estate — under 1 km away · Kotagiri
- Burnside Tea Estate — 1.1 km away · Tamil Nadu
- Warwick Estate — 1.3 km away · Kotagiri
- Tea Studio — 5.9 km away · Kattabettu
Estates at a Similar Altitude to Glendale Estate
Elevation shapes how slowly leaf matures, so we match Glendale Estate (1,961 m) with estates within 150 m of its height that are not its neighbours. Each is shown with its own 2025 climate. Glendale Estate recorded 1,459 mm in 2025, 14% less than the 1,698 mm average across these estates: at the same height, local weather and exposure matter as much as elevation.
| Estate | Where | Elevation | Rain 2025 | Mean high |
|---|---|---|---|---|
| GATUNGURU | Mathioya, Kenya | 1,961 m | 1,518 mm | 20.9 °C |
| Concordia Tea Estate | Kandapola, Sri Lanka | 1,962 m | 2,796 mm | 18.9 °C |
| KIBWELE | Iringa, Tanzania United Republic Of | 1,963 m | 1,215 mm | 19.4 °C |
| Shagasha Tea Factory | Gisuma, Rwanda | 1,964 m | 1,875 mm | 21.2 °C |
| Kymulot Factory | Bomet - Tenwek - Silibwet Rd, Kenya | 1,967 m | 1,088 mm | 23.3 °C |
Glendale Estate Compared with India
In India, Glendale Estate is drier than 98% of the others by 2025 rainfall; higher than 94% of the others by elevation; cooler than 93% of the others by daytime temperature. The table sets Glendale Estate against the 249 other estates we map in India, so you can see whether it is typical for its country or an outlier.
| Measure | Glendale Estate | Country median | Country range |
|---|---|---|---|
| Elevation | 1,961 m | 126 m | 6 to 2,299 m |
| Annual rainfall (2025) | 1,459 mm | 2,778 mm | 745 to 4,774 mm |
| Mean daily high | 19.7 °C | 28.3 °C | 16.9 to 34.5 °C |
| Mean overnight low | 12.8 °C | 19.3 °C | 9.3 to 24.2 °C |
Observed Climate at Glendale Estate (2025)
ERA5 reanalysis data modelled for Glendale Estate’s coordinates recorded 1,459 mm of precipitation across calendar year 2025. The wettest month was May (241 mm) and the driest was February (2 mm). Daytime highs averaged 19.7 °C and overnight lows 12.8 °C over the year; April was the warmest month and December the coolest.
| Metric | 2025 value |
|---|---|
| Annual precipitation | 1,459 mm |
| Wettest month | May (241 mm) |
| Driest month | February (2 mm) |
| Mean daily high | 19.7 °C |
| Mean overnight low | 12.8 °C |
Frequently Asked Questions
Where is Glendale Estate located?
Glendale Estate is in Coonoor, India, at coordinates 11.4235, 76.8639, at an elevation of about 1961 metres.
Who operates Glendale Estate?
Glendale Estate is operated by Glenworth Estate Ltd., according to public supply-chain records.
What type of tea does Glendale Estate produce?
Glendale Estate is recorded as producing black tea.
What certifications does Glendale Estate hold?
Glendale Estate is recorded as holding the following certification(s): Ethical Tea Partnership.
How much rain does Glendale Estate receive?
ERA5 reanalysis data for the estate's coordinates recorded 1,459 mm of precipitation in 2025, peaking in May (241 mm).
How does Glendale Estate compare with estates at a similar elevation?
Glendale Estate recorded 1,459 mm in 2025, 14% less rain than the 1,698 mm average of estates at a similar elevation.
Data sources: public supply-chain disclosures (Ethical Tea Partnership member lists, Rainforest Alliance certificate holders and retailer supplier disclosures); climate figures are ERA5 reanalysis modelled for the estate’s coordinates via Open-Meteo (calendar year 2025); coordinates and elevations from geocoded records. Spotted an error? Email [email protected].
