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From Pathfinder Lost Omens Tian Xia Character Guide, which isn't enabled.

Arboreal Conversationalist

FEAT 13
UNCOMMONGNOME
Prerequisites kijimuna gnome heritage or at least one primal innate spell from a gnome heritage or feat
Frequency 2 times per day
Access kijimuna gnome heritage or Tian Xia origin

With your close connection to primal energies and the First World, you can communicate with trees. You can cast Speak with Plants as a 4th-rank innate primal spell twice per day.

Pathfinder Lost Omens Tian Xia Character GuideORC