This coffee is produced by several hundred farmers, most of them mainly growing the K7 cultivar with some farmers also producing the SL28 and SL34 cultivars.
K7 was released in Kenya in 1936 after selections from the original population by Scott Agricultural Laboratories.
It is still planted and produced in Kenya and most farmers who deliver cherries to the Kapsokisio wet mill are still producing K7.
Recent genetic tests have confirmed that K7 is related to the Bourbon genetic group.