Arabica · Coffee Variety
Ruiru 11
Ruiru 11 is Kenya's answer to its two great scourges — coffee berry disease and leaf rust. Bred at the Coffee Research Station at Ruiru as a composite hybrid (Catimor-type resistance crossed with quality parents including SL28), it lets farmers produce without the heavy fungicide programs SL varieties demand.
Its compact frame doubles planting density, and while early releases cupped clearly below the SLs, continued selection narrowed the gap — modern Ruiru 11 from good factories participates in Kenya's top lots, and its economics keep it central to smallholder replanting.
Ruiru 11 at a glance
| Species | Arabica |
|---|---|
| Lineage | Composite hybrid bred at Kenya's Ruiru research station, released 1985 |
| Plant stature | Compact (dwarf), high-density planting |
| Yield potential | High |
| Disease resistance | Resistant to coffee berry disease and leaf rust |
| Optimal altitude | 1,400–2,000 m |
| Bean size | Medium |
| Cup profile | Blackcurrant and citrus in the Kenyan register, slightly softer structure than SL28 |
Where Ruiru 11 is grown
Ruiru 11 — frequently asked questions
Does Ruiru 11 cup as well as SL28?
The best modern Ruiru 11, grown high and processed at top factories, comes close — and blends of SL and Ruiru cherry are common in cooperative lots. SL28 retains the edge in intensity; Ruiru wins decisively on disease economics.
Why did Kenya breed Ruiru 11?
Coffee berry disease can destroy half a crop in wet years, and fungicide programs are costly. Ruiru 11's resistance made reliable production possible for smallholders who couldn't afford intensive spraying.
What is Batian's relationship to Ruiru 11?
Batian (2010) is its taller successor from the same program — selected for the same resistances with a cup profile closer to the SL standard.
Sourcing Ruiru 11? Volcana Coffee grows and exports high-altitude Catimor, Typica, and washed Fine Robusta from the Bolaven Plateau, Laos — with SGS-inspected quality and full export documentation.
Request a SampleRelated coffee varieties
Typica
Clean, sweet, silky body with delicate citrus and floral notes at altitude.
Bourbon
Caramel sweetness, balanced citric acidity, buttery mouthfeel.
Caturra
Bright citric acidity, sugar-cane sweetness, lighter body than Bourbon.
SL28
Blackcurrant, grapefruit, tomato-vine acidity, wine-like body — the classic Kenya profile.