Wonosari

Wonosari is a tea estate located in East Java, Indonesia, at an elevation of 954 metres. The estate is managed by PT Perkebunan Nusantra XII, one of Indonesia's state-owned plantation companies. It produces both black and green tea and is recorded as a supplier to the British supermarket chain Morrisons.

Terroir & Climate

At 954 metres above sea level, Wonosari occupies a mid-elevation position in East Java's tea-growing landscape. Estates at this altitude in equatorial Indonesia typically experience warm, humid conditions year-round, with reliable rainfall distributed across much of the year. The tropical latitude means that seasonal variation in day length is minimal, allowing for relatively continuous vegetative growth rather than the sharp dormancy cycles seen in temperate or high-altitude tea regions.

Mid-elevation sites in Java generally benefit from good drainage on volcanic soils, which tend to be fertile and well suited to tea cultivation. The consistent warmth at this altitude usually promotes vigorous growth, and estates in this zone often manage frequent plucking cycles. The interplay of altitude, rainfall, and equatorial sunlight typically encourages a leaf character that balances yield with reasonable body in the cup, though specific outcomes depend on cultivar selection and manufacturing discipline.

Tea Produced

Wonosari produces both black and green tea from its East Java plantings. Black teas from mid-elevation Indonesian estates generally offer a straightforward, malty profile with moderate astringency and good colour—characteristics that suit everyday blended consumption. Green teas from this region tend to be mild and vegetal, often with a soft, slightly sweet character rather than the sharper grassiness associated with higher-altitude or cooler climates. The consistent growing conditions at 954 metres typically support teas that prioritise reliability and approachable flavour over dramatic complexity.

Supply Chain & Market Position

Wonosari is recorded as supplying Morrisons, one of the United Kingdom's major supermarket chains. This connection places the estate within the orbit of high-volume, price-sensitive retail supply, where consistency, food safety compliance, and competitive cost are paramount. Supplying a large British grocer suggests that Wonosari's output meets the logistical and quality benchmarks required for commodity and own-label tea markets, and it positions the estate as part of Indonesia's ongoing export relationship with European buyers seeking alternatives to traditional Indian and East African supply.

• Recorded supplier to  Morrisons

Operator

Wonosari is operated by PT Perkebunan Nusantra XII, a state-owned enterprise that forms part of Indonesia's network of plantation holding companies. PT Perkebunan Nusantra XII manages agricultural estates across a range of crops, and our directory records one other tea estate under its operation. The company's structure reflects Indonesia's legacy of government involvement in plantation agriculture, and its estates typically serve both domestic and export markets with an emphasis on volume production and supply-chain integration.

Location & Neighbouring Estates

Wonosari lies at -7.8211, 112.6433 in East Java, Indonesia. Its 954 m elevation is the 12th highest of 17 estates we map in Indonesia. The nearest estates in the TeaTrade directory, measured point-to-point from these coordinates, are:

• Pasir Malang Tea Estate — under 1 km away · Malang Regency
• Sirah Kencong — 60 km away · East Java Province
• Dayeuh Manggung Tea Estate — 525 km away · Kabupaten Garut
• Sedep Tea Estate — 549 km away · WEST JAVA
• Talunsantosa Tea Estate — 549 km away · West Java

Estates at a Similar Altitude to Wonosari

Elevation shapes how slowly leaf matures, so we match Wonosari (954 m) with estates within 150 m of its height that are not its neighbours. Each is shown with its own 2025 climate. Wonosari recorded 3,891 mm in 2025, 51% more than the 2,571 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
Teesta Valley Tea Estate	Dist, India	954 m	3,324 mm	23.4 °C
Yixian Qingye Tea Farm Co. Ltd - Refining and primary processing	Menglian County, China	964 m	1,688 mm	26.6 °C
El Teb	Lunugala & Hewa Eliya (or Badulla North), Sri Lanka	941 m	2,624 mm	26.3 °C
Guranse Tea Estate Pvt. Ltd. - Primary Processing, Refining, and Packing	Koshi Hwy, Nepal	938 m	2,512 mm	24.0 °C
Balangoda Plantations, Debedde	Uva Province, Sri Lanka	972 m	2,709 mm	26.2 °C

Wonosari Compared with Indonesia

In Indonesia, Wonosari is wetter than 75% of the others by 2025 rainfall; lower than 69% of the others by elevation; warmer than 69% of the others by daytime temperature. The table sets Wonosari against the 16 other estates we map in Indonesia, so you can see whether it is typical for its country or an outlier.

Measure	Wonosari	Country median	Country range
Elevation	954 m	1,410 m	23 to 1,859 m
Annual rainfall (2025)	3,891 mm	3,034 mm	2,437 to 4,698 mm
Mean daily high	25.2 °C	22.9 °C	20.0 to 30.6 °C
Mean overnight low	18.2 °C	15.9 °C	13.3 to 23.5 °C

Observed Climate at Wonosari (2025)

ERA5 reanalysis data modelled for Wonosari’s coordinates recorded 3,891 mm of precipitation across calendar year 2025. The wettest month was January (809 mm) and the driest was July (41 mm). Daytime highs averaged 25.2 °C and overnight lows 18.2 °C over the year; October was the warmest month and July the coolest.

Metric	2025 value
Annual precipitation	3,891 mm
Wettest month	January (809 mm)
Driest month	July (41 mm)
Mean daily high	25.2 °C
Mean overnight low	18.2 °C

Frequently Asked Questions

Where is Wonosari located?

Wonosari is in East Java, Indonesia, at coordinates -7.8211, 112.6433, at an elevation of about 954 metres.

Who operates Wonosari?

Wonosari is operated by PT Perkebunan Nusantra XII, according to public supply-chain records.

What type of tea does Wonosari produce?

Wonosari is recorded as producing black and green tea.

Which buyers does Wonosari supply?

Public supplier disclosures record Wonosari as supplying Morrisons.

How much rain does Wonosari receive?

ERA5 reanalysis data for the estate's coordinates recorded 3,891 mm of precipitation in 2025, peaking in January (809 mm).

How does Wonosari compare with estates at a similar elevation?

Wonosari recorded 3,891 mm in 2025, 51% more rain than the 2,571 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].