I want to ask a question that maybe few horticulturist will be interested in.Because my paper want to introduce this,so this is a question that puzzle me all the time.I want to know,when and how so many horticulturists began to domesticate these beautiful Poe grasses and other grasses-like plants as og in the landscape.And these plants all origin from your own country?Had they met any difficulties? So many cultivars be named in trade win authority? I only find some conclusion in the forward of the book written by Rick darke.Can anybody offer some information of this?Or where can I get such information?(I cannot get any relative books about og in our country.)Thanks.