Splitting up my plants?
I am still a rookie gardener, so please bare with my inexperience. I planted 3 stella de oro (I think) lilies about 6 years ago. Then I planted one lily that has red and yellow center bloom and another one similar but it's a little taller and slightly different leaves. I don't remember those names. Anyway, they are getting really big. I have never really cut them, just cleaned up a little in each Spring. They have done so well every year. They are beautiful and border my flower garden. I feel like I should split them in half or thirds and plant elsewhere in my yard. How do I do this? I probably should have done it in the Spring, because now they are in full bloom. Should I wait or try to do it on a cool day? What is the process? What do I need to know? Thanks.