How big are the flower buds? In total, there are three different main colours but each flower has stripes and a heart. Fox glove is bi-annual. Roots don't spread as fast as bleeding heart. You can plant the planter to the ground but make sure the planter has holes sufficiently big for good drainage. Collect mature seeds in the fall and plant them early next May in the same spot. I love fox glove for its vibrant colours, long booming time, and mosquito eating! Don't let kids/pets eat the flowers --- it may cause stomach upset.