How to Grow Diascias: The Complete Diascia (Twinspur) Flower Guide.Diascia, also known as Twinspur, thrives in cool weather, gracing gardens from spring to autumn. Twinspur, also known as Diascia. Twinspur thrives in well-drained soil and requires regular watering to maintain slight moisture, without becoming waterlogged. How to GrowTwinspur Diascia. Twinspur Diascia generally performs best in full sunlight, but benefits from afternoon shade in hot climates. Soil should be well-drained, moist, and fertile. Twinspurgrows and flowers best when daytime temperatures are in the 70s and nighttime temperatures don't fall below 50 degrees Fahrenheit. It often struggles in high humidity. Growing Requirements for Twinspur Plants. Twinspursgrow and flower best when they receive full sun for most of the day, but in hot summer regions, they should be grown in partial shade. A pretty little short-lived perennial, that is usually grown as an annual in the UK. Its dainty twin-spurred flowers give it its common name, twinspur. ... How do you overwinter Diascia? GrowingFlowers from Seed. Transplanting Seedlings. Planting Flower Successions.GrowingTwinspur. Many cultivars of erect, spreading annual herbs, to 1 ft. (30 cm) tall and 18 in. Trailing Antique Rose Twinspur will grow to be about 8 inches tall at maturity, with a spread of 30 inches. Opciones de compra y productos Add-on. Diascia, also known as Twinspur, is a stunning flowering plant that can transform any garden, patio, or hanging basket into a vibrant masterpiece. Diascia Flower (Twinspur Plant) delicate plant, good ground cover, small shell-shaped flowers in orange, pink, white, one unique long petal. [DETAILS].