The first known meaning of pineapple decor is to welcome people to a home. In ancient times, pineapples were placed outside of a sea captain’s home as a sign that he was safe and ready to welcome guests. The pineapple has since become a symbol of hospitality and neighborliness and continues to have a positive effect on people. Pineapple decor is a welcome symbol, and it’s common to see pineapples in the homes of welcoming hosts.