this is there third season. don't panic. my first year the magnum (in the middle) went to the roof and back, the santiem i didnt think survived and the sterling barely made it up the string. now they are all three doing well and the sterling have gone nuts. i have already given up rhizomes. yours will do fine they are all at different rates.
incidentally, anyone in the chicago area that are interested in some of these rhizomes, let me know. i am likely also to get more hops than i will use in my little brewery.