300 Seeds Aruncus Seeds - Dioicus ( Aethusifolius ) Goat's Beard, Best Perennials for Shade This is a large, upright plant (6 feet tall by 4 feet wide) for the shady border or woodland garden. Its flowers cut well for use both fresh and dried. From spring through mid-summer large, 20 inch tall, fluffy plumes of tiny, creamy white to greenish white flowers float above the plant. The large, 3 foot leaves are doubly pinnate with each leaflet being medium green and doubly toothed. Aruncus (Aethusifolius Dioicus) - Commonly called Goat's Beard, this shade garden plant is grown from Aruncus seeds. If you have areas of partial shade, Aruncus dioicus is one of the best perennials for shade. Growing Goatsbeard from seed is so rewarding, and each spring and early summer you'll enjoy sprays of creamy white flowers, and fern-like foliage that stays attractive all season. A second botanical name is Aruncus sylvestris, and some gardener's also refer to it as Aruncus dioicus Bride's Feathers. Aruncus flower seeds germinate best with a cold/moist stratification. Some gardeners will direct sow in the late fall.