91-98 Days to maturity. Salpiglossis sinuata. Salpiglossis Royale Series Seeds. Non-GMO, Annual. Royale Series salpiglossis seeds grow one of the summer's most exotic, colorful, and exclusive blooms. Royale Series seeds promise your garden compact salpiglossis bushes bursting with 3-inch heads of smokey red and mahogany 5-lobed petals. Royale Series salpiglossis seeds only mature to 12-16 inches tall and are ideal to grow as a bedding plant or for indoor containers and pots. Royale Series salpiglossis is native to regions near the Antarctic and is a vigorous performer in cool, temperate gardens.