In USA, livestock producers have sown very few acres primarily because of seed limitations. The cultivar Rhizo is being increased by commercial seed companies. The species is classified by most authorities in section Lotoidea, subsection VII Platystylium of the genus Trifolium . Hexaploids are generally, but not always, the most vigorous but cultivars have been developed at each ploidy level. Kura clover is closely related to T. repens and T. hybriduum with which it has been hybridized.
Corolla is white to pale pink turning flesh colored after anthesis.
Typical legume inflorescences are grouped into heads, usually upright but with the lower ones deflexed. Pods are 1 to 2 seeded. Crop Culture Kura clover is adapted to about the same latitude as its origin, about 40 to 50 degrees. Consequently, it is very cold hardy and tends to be more productive in cooler than in warmer climates. However, breeding efforts are being made to extend its area of usage southward in the U.S., and northward in New Zealand.