- Catalogue altitude
- 1,850 m · 2 of 4 catalogue coffees report altitude. Very small sample. This sample does not establish the full growing range.
- Climate
- three climate zones: tropical rainforest in the west near the Aberdares, sub-tropical in the centre, semi-arid in the east
- Terrain
- hills and valleys drained by rivers; western part rises toward the Aberdare Range
- Soil
- volcanic soil, fertile, suited to farming
- Varieties
- SL 28 · SL 34 · Batian · Ruiri