The stalked wild petunia is a short bushy perennial much like Ruellia caroliniana but with its flowers held away from the main stem on long stalks. Flowers are rather large too. Wild petunias are not related to true petunias but resemble them in form. Can spread aggressively by seeds which are distributed by “spring-loaded” seed pods. Grows 1-2 feet tall. blue/lavender flowers from July-September. Zone 4-8. TN ecotype. // about 30 seeds per packet. Germination requirements: 60 days, cold-moist stratification.