Board Thread:Naruto Discussions/@comment-1512913-20170417105433/@comment-27924662-20170418130438

Thekillman wrote: The Zetsu themselves never use wood release, only Spiral Zetsu was able to use it in conjuction with another Wood Release user, either Obito or Yamato. This suggests that while the ability is present in Zetsu, it's in a much weaker form. As far as i can remember, encased by Spiral Zetsu is the only time Obito used wood release. For white zetsus my guess is that they don't have much chakra of their own and hence they can use wood release in conjunction with someone else as shown in the series. Thekillman wrote:

Because of this, it seems logical to me that Naruto and Sasuke received some of those Zetsu cells, granting them the healing and use of prosthetics without the easy (or rather: Overwhelming) use of wood release. Oro got his wood release from zetsus by the way...