Abstract: A device for supporting cut flowers. The device is in the form of a hollow tube with a longitudinal opening formed therein. The edges of the tube at the opening carry flanges, disposed at an angle with respect to one another of at least 30.degree. and flaring outwardly from the tube. The interior surface of the tube has longitudinal ridges, preferably three ridges, that engage the flower stem and add stiffening to the tube for better support. The ridges also define channels between the stem and the interior surface of the tube for air to circulate and the stem to breathe. The device is fitted to the stem of a cut flower, just below the base of the flower head, to prevent drooping and wilting. It can be installed on a variety of cut flowers without damaging the stem.