Frequently asked questions

At what altitude is TRS1 coffee grown?

TRS1 gives its best results between 400 and 900 metres of altitude. Higher elevations slow ripening and produce denser beans with more pronounced acidity.

Is TRS1 resistant to coffee leaf rust?

Declared resistance: Moderate.

How it grows

Growing altitude400–900 m

Disease resistanceModerate

YieldHigh

Potenziale in tazzaGood

Identified in2015

Polyclonal, from clones TR4, TR9, TR11 and TR12; Congo genetic group. Seed gardens planted by WASI in 2003, official approval in 2015. Yield 4000-5000 kg/ha of green coffee.

Where it is grown

Origin Vietnam

Species Canephora (Robusta)

Origin altitude500–1000 m

Harvestoct · nov · dec · jan

Genealogy

Derived from:

TR4

Sources

• https://varieties.worldcoffeeresearch.org/varieties/trs1

Last updated: 12 sep 2026.

Altitude, cup profile and scores describe the typical behaviour of the variety: a single lot depends on the harvest year, soil, processing and roast. Data without a verified source is not published.

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