i planted approximately 3 acres as part of a mix. the kura is roughly 20 percent. i placed it around a 27 acre CRP field as a fire break and down a gas pipe-line easement. although it is hard to decipher which clover is which, in this, the second year, it is beginning to establish and is filling in those spots where the initial planting did not take. it will spread and has a 100 year life (supposedly). give me 97 more years and i will let you know. it is expensive, but if part of a mix, based upon its ability to spread and long life, well worth the money.