I've heard it said that in Scripture, trees are used as a symbol for God's people....Based on Pslam1 it seems that way-
And he shall be like a tree planted by the rivers of water,
that bringeth forth
his fruit in his season;
his leaf also shall not wither;
and whatsoever he doeth
shall prosper.
Psalm 1:3
To console those who mourn in Zion,
To give them beauty
for ashes,
The oil of joy for mourning,
The garment of praise for the spirit of
heaviness;
That they may be called trees of righteousness,
The planting of the
LORD, that He may be glorified.
Isaiah 61:3 NKJV