yh, the redwheat in the middle with the diagonal placed torches does indeed grow to the final stages so it seems fine but anyway I solved the problem for me.
I picked an older version at random namely version 747 and now i get redwheat MUUCHHH MUUUCH easier. So i can only assume ther's a bug with the never versions of IC2 maybe its just in my case but yeah, what build IC2 did you Player use? Now i wonder which is the best IC2 release with functioning redwheat to play that ...