- You Will Get 50 Seeds Of Pelleted Dianthus Sweet Black Cherry Flower Seeds. - This is for 50 pelleted seeds these are the Dianthus Black Cherry. - This is a very pretty dianthus this will spread about 10 to 15 inches and get to be about 24" tall. - These are great for resale in 6" pots and also look great in flower beds these are a annual. - These are really good as cut flowers in a mix of other dianthus or flowers.