WHOLE CHARACTER
树shù
tree; to establish; to set up (树立)
树 is a tree — and by extension to establish, as in 树立.
The modern right side is 对 (the simplified form that replaced the historical sound side 尌 of 樹); its 又 and 寸 are the written subdivisions, not the exact historical sound unit. ZDIC's 形声 header names 对 as the modern sound side.
MEANING
木mù
tree; wood
Tree/wood-related meaning clue.
In 树: meaning Shown with its documented or clearly limited role.
MODERN RIGHT SIDE (WRITTEN SOUND SIDE)
对duì
correct; to face; a pair
The modern right side of 树; the historical 樹 used 尌 as its exact sound piece, so 对 is shown as the written piece with 又 and 寸 nested.
In 树: modern right side (written sound side) Shown with its documented or clearly limited role.