koiasora Dulu Tea Garden Factory

Koiasora Dulu Tea Garden Factory is a black tea estate located in the Chattogram region of Bangladesh, operating at an elevation of 11 metres above sea level. The estate is operated under the name Koiasora Dulu Tea Garden Factory itself. No publicly documented supply relationships with international buyers are currently on record.

Terroir & Climate

At 11 metres above sea level, Koiasora Dulu Tea Garden Factory occupies low-lying terrain in the Chattogram region, a geography that tends to yield growing conditions distinct from Bangladesh's better-known highland tea zones. Estates at this elevation in subtropical Bangladesh generally experience warm, humid conditions year-round, with substantial monsoonal rainfall that typically supports vigorous vegetative growth. The coastal proximity of the Chattogram area often moderates temperature extremes, though it can also bring higher ambient humidity during the wet season.

Low-altitude gardens in this latitude typically contend with faster flush cycles and more robust leaf growth than their high-elevation counterparts. Drainage and soil management tend to be critical at near sea-level sites, where water retention can influence root health and the concentration of metabolites in the leaf. The warmth and moisture characteristic of this environment generally favour high yields, though the resulting leaf character often differs from the more delicate profiles associated with cooler, mountainous estates.

Tea Produced

Koiasora Dulu Tea Garden Factory produces black tea. Low-elevation black teas from Bangladesh typically yield full-bodied, malty cups with relatively brisk astringency and darker liquor. The warm, humid growing conditions common at this altitude tend to produce larger leaf and a bold, straightforward character rather than the more nuanced aromatics often found in high-grown teas. Estates in the Chattogram region generally manufacture orthodox black grades, though processing style and oxidation levels can vary significantly between producers.

Location & Neighbouring Estates

koiasora Dulu Tea Garden Factory lies at 22.3752, 91.8349 in Chattogram, Bangladesh. Its 11 m elevation is the joint 4th highest of 13 estates we map in Chattogram. The nearest estates in the TeaTrade directory, measured point-to-point from these coordinates, are:

• adhar manik tea asteat factory — under 1 km away
• Karnafully Tea Estate — under 1 km away
• Koyachara Dolu Tea Garden Karkana — under 1 km away
• Poncho Boti Tea Factory — under 1 km away
• Ramgor Tea Estate Factory — under 1 km away

Estates at a Similar Altitude to koiasora Dulu Tea Garden Factory

Elevation shapes how slowly leaf matures, so we match koiasora Dulu Tea Garden Factory (11 m) with estates within 150 m of its height that are not its neighbours. Each is shown with its own 2025 climate. koiasora Dulu Tea Garden Factory recorded 2,211 mm in 2025, 7% more than the 2,059 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
Zhoushan Putuo Speciality Co. Ltd.	Hangzhou, China	11 m	1,545 mm	24.2 °C
GONESHBARI	3RD FLOOR KOLKATA WB IN, India	11 m	1,858 mm	31.4 °C
Deamoolie	Pretoria Street, India	11 m	1,858 mm	31.4 °C
Aiya Co., Ltd.	Nisho, Japan	11 m	1,592 mm	20.7 °C
Evergreen Group, Evergreen	Southern Province, Sri Lanka	11 m	3,440 mm	29.8 °C

koiasora Dulu Tea Garden Factory Compared with Chattogram

In Chattogram, koiasora Dulu Tea Garden Factory is drier than 67% of the others by 2025 rainfall; lower than 75% of the others by elevation; cooler than 58% of the others by daytime temperature. The table sets koiasora Dulu Tea Garden Factory against the 12 other estates we map in Chattogram, so you can see whether it is typical for its region or an outlier.

Measure	koiasora Dulu Tea Garden Factory	Region median	Region range
Elevation	11 m	11 m	8 to 25 m
Annual rainfall (2025)	2,211 mm	2,211 mm	2,165 to 2,233 mm
Mean daily high	30.6 °C	30.6 °C	29.6 to 30.6 °C
Mean overnight low	21.5 °C	21.5 °C	20.7 to 22.8 °C

Observed Climate at koiasora Dulu Tea Garden Factory (2025)

ERA5 reanalysis data modelled for koiasora Dulu Tea Garden Factory’s coordinates recorded 2,211 mm of precipitation across calendar year 2025. The wettest month was July (466 mm) and the driest was January (0 mm). Daytime highs averaged 30.6 °C and overnight lows 21.5 °C over the year; May was the warmest month and December the coolest.

Metric	2025 value
Annual precipitation	2,211 mm
Wettest month	July (466 mm)
Driest month	January (0 mm)
Mean daily high	30.6 °C
Mean overnight low	21.5 °C

Frequently Asked Questions

Where is koiasora Dulu Tea Garden Factory located?

koiasora Dulu Tea Garden Factory is in Chattogram, Bangladesh, at coordinates 22.3752, 91.8349, at an elevation of about 11 metres.

Who operates koiasora Dulu Tea Garden Factory?

koiasora Dulu Tea Garden Factory is operated by koiasora Dulu Tea Garden Factory, according to public supply-chain records.

What type of tea does koiasora Dulu Tea Garden Factory produce?

koiasora Dulu Tea Garden Factory is recorded as producing black tea.

How much rain does koiasora Dulu Tea Garden Factory receive?

ERA5 reanalysis data for the estate's coordinates recorded 2,211 mm of precipitation in 2025, peaking in July (466 mm).

How does koiasora Dulu Tea Garden Factory compare with estates at a similar elevation?

koiasora Dulu Tea Garden Factory recorded 2,211 mm in 2025, 7% more rain than the 2,059 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].