Karmijn de Sonnaville was developed at the University of Wageningen in the Netherlands during the 1950s. It is a Cox-style variety, but with a distinctly more pronounced aromatic flavor.
Somewhat surprisingly for a relatively modern apple variety, the exact parentage is not known. Cox's Orange Pippin is the female parent but the pollen source is uncertain, either Belle de Boskoop or Jonathan. Since Belle de Boskoop and Jonathan have a passing resemblance to each other, and both also have quite strong flavours, it is difficult to guess which is the other parent. We think it is more likely to be Belle de Boskoop, from the tendency to russet and the triploid nature.
Despite the part-English ancestry, Karmijn de Sonnaville does not grow well in the UK and can be simply hard and unpleasant in a poor year. It does very well in the northern and central states of the USA, and has the potential for very good flavor.