Thank you so much for the info and the link, I am going to check that out. I have Patriot also and have not ever noticed it either. I don't have any of the others on that list though, but now I know not to get them either!
I wonder if some are more apt to do that if they are fertilized more often or have richer soil that causes it to grow faster? I am just looking for some with with on them, and ones that have pretty consistent coloring all the time. I don't care for the ones that start out one color and then change over the summer. Maybe most of them do? I don't know.