Reed and Flower Diffuser with Aroma Flowers diffuser handcrafted by hand from a variety of natural flowers in various sizes and styles. Mixed rod and branch reed diffuser with sesame wood. Wooden rattan reed diffuser. Place a flower on a reed (which you can trim and bend) and place the reed limb inside the diffuser bottle. The oil will saturate the reeds, and as it wicks up the reeds and flowers, it will release the aroma into the air. Depending on the oil, it may take several days for the reeds to absorb it. Change the reeds and flowers in your diffusers every time you change the diffuser oil for the devices to operate at their peak efficiency.