Ok, transplanted a s. leucophllya today and divided it at the same time. I am wondering, can you take a root cutting from a smaller root, NOT on the rhizome? One of the roots that looks all wirey and whatnot. The plant I divided and transplanted was about 15" tall dormant. I went from a one gallon container (where it was visibly potbound) to a three gallon container. Is this too big of a pot?? I put the divided portion of the plant in a one gallon pot. Here is another question...I got a gaggle of s. leucophylla (4ish) planted with about ten s. psittacina and ten or so s. purpea. All of these plants are large. The sar. leucophylla are (I measured) 32" tall. What size pot should I use for these as I am sure they are pot bound in this five gallon container. They are also planted along the edge of the pot. thanks...