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Kenya · Species

Kenya Arabica

Kenyan Arabica is the most structured coffee in the region and the most precisely traceable. This page covers the varieties, the processing and the system that produces both.
Species
Arabica
Preparation
Fully washed with soak · Mbuni (natural)
Harvest
Main crop October–December; early (fly) crop May–July
Green Arabica coffee beans in bulk, showing the oval shape and curved centre cut.

Quick answer

Kenyan Arabica is fully washed with a distinctive clean-water soak, grown mainly around Mount Kenya and the Aberdares at 1,400–2,100 m. SL28 and SL34 are the varieties most associated with the classic profile, with Ruiru 11 and Batian bred later for disease resistance.

Contract on: region · grade · screen · process · crop · moisture · defect tolerance · cup approval.

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The varieties

Kenyan Arabica varieties
VarietyOriginNotes
SL28Scott Laboratories selectionDeep, structured acidity; drought tolerant; susceptible to leaf rust and CBD
SL34Scott Laboratories selectionSimilar profile to SL28; handles higher rainfall better
K7Kenyan selectionSome disease tolerance; generally milder in the cup
Ruiru 11Bred for disease resistanceCompact, high yielding; resistant to CBD and leaf rust
BatianLater disease-resistant releaseTaller than Ruiru 11, with a cup closer to the SL selections
A single factory catchment usually contains a mixture, and the ratio shifts as replanting continues.

The disease-resistance story matters commercially. SL28 and SL34 produce the profile Kenya is known for and are vulnerable to coffee berry disease and leaf rust. Ruiru 11 and Batian were developed in response. Where a factory’s catchment has shifted heavily towards the resistant varieties, the cup can shift with it — which is one reason factory-level cupping matters season to season.

Processing

Cherry is delivered to a cooperative factory — the wet mill — where it is pulped, fermented, washed in grading channels, soaked in clean water and dried on raised beds. The soak is the step that distinguishes Kenyan processing and is strongly associated with the clarity of the cup. See washed coffee.

The regions

  • Nyeri — red volcanic soils between the Aberdares and Mount Kenya, 1,600–2,000 m. Many of the most structured, blackcurrant-driven lots.
  • Kirinyaga — southern and eastern Mount Kenya, dense factory network, frequently very tight day-lot separations.
  • Murang’a — large smallholder base south of Nyeri, generally rounder and less piercing.
  • Embu and Meru — eastern Mount Kenya; Meru in particular can be juicier and more tropical.
  • Kiambu — estate-heavy, close to Nairobi, producing large uniform single-estate lots.
  • Kisii, Bungoma and Trans-Nzoia — western highlands, smaller volumes, softer acidity, more accessible pricing.

Harvest

Main crop
October–December, following the long rains flowering in February–April
Fly crop
May–July, following the short rains flowering in October–November
Main crop export
December–June
Fly crop export
July–October

The fly crop is smaller and more variable than the main crop, and is useful for bridging mid-year supply. See the Kenya crop calendar.

Kenyan Arabica enquiries

Tell us the profile and volume. We will confirm what the current crop supports, with the factory and outturn identified.

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Updated 2 min read

Growing regions

Kenya growing regions

Altitude and harvest timing are the two variables a sourcing decision turns on. Where two regions overlap they compete for the same milling and shipping slot; where they do not, a programme can be scheduled across them.

All Kenya coffee
Region · altitude
J
F
M
A
M
J
J
A
S
O
N
D
  • Nyeri1,600–2,000 m
  • Embu & Meru1,300–1,950 m
  • Kirinyaga1,400–1,900 m
  • Kisii, Bungoma & Trans-Nzoia1,500–1,900 m
  • Murang’a1,350–1,800 m
  • Kiambu1,500–1,800 m
Harvest windows and altitude bands for each growing area, drawn from the same figures shown in the region panels. Windows are typical and move with rainfall — where two regions overlap they compete for the same milling and shipping slot, and where they do not, a programme can be scheduled across them.
  • Nyeri
    Altitude
    1,600–2,000 m
    Harvest
    October–December, fly crop May–July
    Processing
    Fully washed with soak
    Species
    Arabica
    Red volcanic soils between the Aberdares and Mount Kenya. Cooperative factories here produce many of the most structured and blackcurrant-driven Kenyan lots.
  • Kirinyaga
    Altitude
    1,400–1,900 m
    Harvest
    October–December, fly crop May–July
    Processing
    Fully washed with soak
    Species
    Arabica
    Southern and eastern flanks of Mount Kenya. Dense factory network, frequently with very tight day-lot separations.
  • Murang’a
    Altitude
    1,350–1,800 m
    Harvest
    October–December, fly crop May–July
    Processing
    Fully washed with soak
    Species
    Arabica
    Large smallholder base south of Nyeri, generally rounder and less piercing than the higher Nyeri factories.
  • Embu & Meru
    Altitude
    1,300–1,950 m
    Harvest
    October–December, fly crop May–July
    Processing
    Fully washed with soak
    Species
    Arabica
    Eastern Mount Kenya. Meru in particular can be juicier and more tropical in profile than the classic central-highland cup.
  • Kiambu
    Altitude
    1,500–1,800 m
    Harvest
    October–December, fly crop May–July
    Processing
    Fully washed with soak
    Species
    Arabica
    Estate-heavy area close to Nairobi, producing large, uniform single-estate lots.
  • Kisii, Bungoma & Trans-Nzoia
    Altitude
    1,500–1,900 m
    Harvest
    October–December
    Processing
    Fully washed
    Species
    Arabica
    Western Kenyan highlands. Smaller volumes, softer acidity, and generally more accessible pricing than the central highlands.

Questions

Frequently asked questions

What are SL28 and SL34?
Arabica selections released by Scott Laboratories in Kenya and the varieties most associated with the classic Kenyan cup. Both are susceptible to leaf rust and coffee berry disease, which led to the later development of Ruiru 11 and Batian.
Does Ruiru 11 cup differently from SL28?
Generally yes — Ruiru 11 is often described as milder and less structured than the SL selections, with Batian sitting closer to them. Where a factory catchment has shifted heavily towards resistant varieties, the cup can shift too, which is why factory-level cupping matters season to season.
What is a Kenyan factory?
The wet mill operated by a cooperative society, where members deliver cherry for pulping, fermentation, washing, soaking and drying. It is the level at which Kenyan lots are identified.
When is Kenyan coffee harvested?
Main crop October to December, with a smaller fly crop May to July. Main crop shipments typically run December to June.

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Tell us the Kenya coffee you need

Region, process, grade, screen, moisture, defect tolerance, crop year, packaging and destination. Send what you know and we will confirm what Kenya realistically supports for the current crop.