Because the land is known for its evergreens, and the evergreens have always been admired by the culture that surrounds them. Anybody that claims the evergreen wasn't native to old testament the geography, to make a straw-man argument against ecumenical context could be dismissed easily, they have no knowledge of their own claims let alone little knowledge to argue another's as "fallacy."
Let me help you out here. The tree on the Lebanese flag is a Lebanese Cedar tree. Here's a picture of one. They grow up to 130 ft tall with a trunk as large in diameter as 9 ft. They can also grow with many trucks coming out of the root base.
Not one person on this thread said that evergreens did not exist in that part of the world in the time of the Old Testament.
What people did say is that the Christmas tree was not used in Judea in biblical times. The origin of what we now call the Christmas tree is Northern Europe.
Not all evergreens are Christmas trees. A Christmas tree is created by taking an evergreen, one that is conical in shape, and decorating it with lights and ornaments. The Bible says nothing at all about Christmas trees.
Further, look at that tree... it's shaped more like an oak tree than it is a conical tree that would be used for a Christmas tree. They don't make good Christmas trees.
The Lebanon Cedars are mentioned in 46 verses in the Bible... Clearly there is no problem with evergreen trees.
"Open thy doors, O Lebanon, that the fire may devour thy cedars. Howl, fir tree; for the cedar is fallen; because the mighty are spoiled: howl, O ye oaks of Bashan; for the forest of the vintage is come down." (Zechariah 11:1, 2)
"He moves his tail like a cedar; The sinews of his thighs are tightly knit." (Job 40:17)
"The priest shall take cedarwood and hyssop and scarlet stuff, and cast them into the midst of the burning of the heifer" (Numbers 19:6)
"The voice of the Lord breaks the cedars; the Lord breaks in pieces the cedars of Lebanon" (Psalm 29:5)
"The righteous flourish like the palm tree and grow like the cedar in Lebanon" (Psalm 92:12)
"I will put in the wilderness the cedar, the acacia, the myrtle, and the olive" (Isaiah 41: 19)
"Behold, I will liken you to a cedar in Lebanon, with fair branches and forest shade" (Ezekiel 31:3)
"I destroyed the Amorite before them, whose height was like the height of the cedars" (Amos 2:9)
"The trees of the Lord are watered abundantly, the cedars of Lebanon that he planted." (Psalm 104:16 NRSV)
[King Solomon made] cedar as plentiful as the sycamore-fig trees in the foothills. (1 Kings 10:27, NIV, excerpt) Here's a list of all 46 verses..
it's a bit too long to post here