Ezekial 40:18-19
What is the spiritual significance of palm trees in scripture?  We know that in the week before the crucifixion, when Jesus came into Jerusalem on the donkey, palm branches were used as an expression of worship.  In Revelation 7:9, the great multitude of people from every nation stands before the throne to worship God.  Each of them is holding a palm branch in their hand.  Here in Ezekials vision of the temple, we see palm trees as a significant item of decoration on the temple walls.  The decorations all center on the most Holy place, which would seem to indicate and importance much greater than simply something nice to look at.  I can only conclude that palm trees represent worship of the most Holy God.  Living in Florida, as I walk by palm trees on a daily basis, I will now use them to remind myself to worship the one who created all things.