Compact plants with mounding habit provide an abundance of trumpet-shaped blooms with a wishbone inside. To successfully grow a wishbone flower plant, start seeds indoors a few weeks before outdoor soil will warm, or purchase small bedding plants at your local garden center. Or, sow seeds directly into the flower bed a week or so after the last frost date in your area. Seeds of the Torenia wishbone flower need light to germinate; cover lightly or simply press them gently into moist soil.
Torenia fournieri, the bluewings or wishbone flower, is an annual plant in the Linderniaceae, with blue, white, or pink flowers that have yellow markings. It is typically grown as a landscape annual, reaching 12–15 in. tall. It has simple opposite or subopposite leaves with serrated edges.
Plant wishbone flowers in the spring after the threat of frost has passed. While they are annuals and will die once frost arrives in the fall, they grow quickly and bloom profusely from early summer all the way until when cold weather sets in. Moreover, the plants are deer-resistant and attractive to hummingbirds.