This is Datura metel Ballerina Double Lavender Tipped. This gorgeous blossom is a double and the flowers have purple tips only and the rest of the bloom is white. Daturas are larval host plants for the Pink-spotted Hawkmoth, Five-spotted Hawkmoth, and the Carolina sphinx Moth. Datura metel is grown all over as an Annual plant and it is a tender perennial in USDA Hardiness Zones 9 to 10.