When I first saw Seedbox, I thought what a cute little plant. It was not a plant I had heard of so I did not recognize its potential. Seedbox is a stunner in the fall. Its right up there with sugar maple, fragrant sumac and other herbaceous perennials like Amsonia and Wild geranium. It turns red yellow and orange and lights up the area in which it is planted. 
 
Seedbox has small bright yellow flowers and long, lance-shaped leaves. The flowers grow from where the leaf and the stem meet. The stem has a reddish color to it. The flowers eventually produce a cube-shaped fruit that surrounds the seed, giving this plant its name. The leaves are bright green in the growing season. This would make a good addition to a rain garden or wetland area.
 
Bees and other insects are attracted to the flowers. The plant blooms late July into early September. In mid-September into October the leaf color is at its peak. Perennials really can make a bold statement in the fall and this is one that will in moist to wet areas. It grows 2 to 3 feet tall in part to full sun.