Bizarre Mutation or Normal Growth To Unexperienced Eyes?

[shades]

what's up with this stem starting to get super woody? This was plant #19 with the pH issue shooting up towards 7.

what's up with this round-ish leaf and bud that's kind of ( ) oval shaped??

 

[ezenzyme]

its all good mate, stems like to get woody when they get older and the growth on the buds sometimes looks strange when they shoot their sugar leafs.