In IC1 I used leaves from trees (cut with shears) as an emergency solution to get biofuel until I had a sugar cane farm. However, in IC2 I can't craft a plantball putting 8 leaves in circle in the crafting table. I guess I can make a labyrithn with the remaining leaves because I have too many.
PS I think my version of IC2 is 0.9 but I'm not sure. I downloaded it from the wiki and it says 0.9, so probably, it will