I recently purchased 2 good-sized mats of dwarf hairgrass from Swap-N-Shop. I received them today but am having a few problems. First, the grass looks very delicate but it is in mats so I am unsure of how to separate it. Also, once separated I am still unsure of how it's planted. I know to plant sprigs every inch or so apart but how big should these be and what not still confuses me. Any help would be greatly appreciated.