This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
樤 combines 木 (tree) with 條, which likely contributes the sound. The exact historical development is uncertain.
A tree 木 beside the component 條. Without a clear meaning, picture a rare, unnamed tree species.
For ジョウ, imagine a rare tree named Joe: Joe -> ジョウ, and this tree is the only one of its kind.