Aromatic Reed and Flower Diffuser Diffuser handcrafted by hand from natural flowers in a variety of styles and sizes. Reed diffuser with combined rod and branch and sesame wood. Wood and rattan diffuser. Put a flower on a reed (you can bend and trim it) and put the reed branch into the diffuser bottle. The oil will soak into the reeds and emit its perfume as it rises up the reeds and flowers. The reeds will need a few days to absorb the oil; the amount of time depends on the oil. Change the reeds and flowers in your diffusers every time you change the diffuser oil for the optimum results.