We met a giant the other day! A nine and a half foot tall goldenrod. That's a very tall goldenrod! It wins the prize for the tallest goldenrod I've ever seen.
goldenrod galls in a previous Nature Post.
More than likely the reason this goldenrod grew so tall was the perfect conditions of the spot where it was growing... and not the plant's genetics. My transplant will probably disappoint me and not grow into another giant.