Where the Evil Spirits goes...

According to ancient African myth, bottles on trees could catch evil spirits and prevent them from entering a home. In the 18th century, Africans who came to the South as slaves adorned cedar trees with bottles for protection, said Robert Farris Thompson, African and African American art historian at Yale University. The color blue also signified healing powers.

"Bottle trees are an important element of African-American visual culture, they will always be with us - like okra, hominy and black-eyed peas."

read more about bottles on trees here