My grandfather gave me some flower seeds that looked like little black pepper corns. The have grown about 12 inches tall, so far, and have long pointy leaves, thick circular stems with buds growing off the stems. Also, the bottom of the stems are purplish while the rest is green. A few have produced fuschia colored flowers and others are hot pink. The flowers look similiar to snapdragon flowers but are more open. Any ideas what this plant might be?