I think you may want to put a hold on this offer until you physically get the plant. I don't think you are allowed to offer for trade a plant you don't have in your possesion yet...
http://www.terraforums.com/forums/showthread.php?t=99153
specifically the quote:
*Do not offer material you don’t actually have ready to go!
Don't shoot the messenger, just trying to help you avoid the wrath of the mods.
(Actually, they are all pretty nice IMO.)