Rudbeckia Sunbeckia is characterized by very strong growth, good branching and at the same time compact shape. It has green leaves and flowers, which are very large and single yellow. It blooms from June to October. The flowers are very good for cutting, they stay fresh in a vase for a long time. Rudbeckia attracts many species of butterflies with its floral scent and warm colors. Thanks to this, we can watch an interesting spectacle, in which colorful butterflies sit on delicate petals.