5 Wood Rose Diffuser Flowers The stems are made of rattan reed which helps deliver the scented oil to the flowers. The flowers are made from wood so they easily absorb the oil and diffuse the scent into the air. These feature the dark skin of the wood to add a beautiful contrast. Fill a vase with your favorite reed diffuser oil, and drop the flowers in. The oil will naturally travel up to the wood flowers. Flowers on reeds are approximately 10 inches tall Made to order in Beautiful Monterey, California.