Delight Dragon Fruit is a hybrid variety that comes from Selenicereus Undatus and Selenicereus guatemalensis. It is a self-pollinating and very fertile variety that will set fruit on its own. Recommend hand pollination to ensure fruit or even greater sized fruit.  This variety is a seedling selection made by the California Rare Fruit Growers. Internet research has stated that the 3-S seedling created by Paul Thomson and Delight are to be the same. It is one of the several crosses from the Niezel, a white flesh variety and Rixford, a purple flesh variety. 
Delights fruit is medium-sized fruit that typically weighs 1 pound. The flesh has a unique pink hue that has a delightful flavor, and this is where it gets its name. Flowers are enormous nocturnal blooms over 14 inches across and bloom all summer. Stems are green three-sided with small spines along the rib.