From the following Naruto Wiki
Whenever Naruto is in Nine-Tails Chakra Mode, Wood Release techniques
will react to the Yang chakra's life-giving properties and mature into
full-grown trees within a matter of seconds, either by contact or
close range.This was also shown to have the same effect on White
Zetsu Army clones, whose genetic make-up is similar to that of
Thus, Naruto himself doesn't directly control the effects his yang chakra has on the wood element or the white zetsu.
The Yang Release (陽遁, Yōton; Viz "Light Style") techniques, based on
the physical energy that governs vitality, can be used to breathe life
Thus, Naruto is not explicitly using the wood element technique, as with the first hokage, yamato or the white zetsu, rather it's the yang element chakra that is resonating in the wood elelemt that provides the wood element the vitality to grow.