Flowers are scientifically proven to have a positive impact on your mental health, relieving the stress and anxiety of the holidays. Some festive flowers include: Poinsettias – They are the classic Christmas flower. The bright red colors on the dark green leaves make it the perfect holiday mascot! They attract happiness and promote positive feelings. Orchids –Unlike the poinsettia, orchids don’t have a long association with Christmas. Instead, they are a unique and special flower that signals warmth and joy. Christmas Cactus – This plant hits the market just in time for the holidays. They increase humidity in the air and creates a cheerful aura in your home.