The key point to note about Kava kava seeds (Piper methysticum) is that the plant’s seeds are generally infertile. So in order to grow new Kava kava plants you usually need to use roots, runners and of cuttings, rather than by attempting to get a new plant direct from the seed. Roots are also used for all the products make out of kava kava from kava drink to kava kava powder. This means seeds are pretty much useless :).