How to Make a Bottle Tree. A bottle tree is a type of recycled glass sculpture that is popular with gardeners. Its origins lay in Egypt, where bottles were used to capture spirits. African slaves also kept bottle trees near their quarters.
Bottle Trees were sometimes placed near the entrance to the house, so the spirits did not enter the house with you. The spirits would become mesmerized by the play of the sunlight through the colors of the glass, and become trapped inside the bottles.