No, I know you weren't trying to change things, but given that it isn't the norm in the newsgroup for a thread to stay on topic, asking people to stay on topic does sound like you're trying to change things, and, from this side of the fence, sounds a wee bit rude.

But now we've sorted out the confusion, there's no problem. Hopefully you'll get the answer you need, just relax about all the other advice that you don't want, and remember too that there's an army of "lurkers" out there who may not know as much about sumach as you, and for whom all the information on suckering etc will be useful.