Keep the surrounding ground bare, so seeds have a place to rest through the winter and sprout in the spring. If you cut back stalks of perennial Black-Eyed Susan, wait until late fall when the plant is completely dormant. Leave three or four inches of the stem above the basal leaves to avoid injuring the plant.Click to see full answer. Regarding this, how do you prepare Black Eyed Susans for the winter?Cut back the stalks of perennial black-eyed susans in the late autumn after the plant has wilted to the ground if you prefer a cleaner flowerbed over the winter. Cut the stalks so that 4 inches of stalks extend out from the bottom-most basal leaves of the plants.Likewise, do Black Eyed Susans come back every year? Blooming mainly in summer, black-eyed Susans (Rudbeckia hirta) commonly grow 24 inches tall with signature yellow to orange petals and a dark center point. Although the blossoms appear fragile, these perennials have a strong root system that often allows the plant to rejuvenate itself every year. Hereof, how do you take care of Black Eyed Susans in the fall? You can cut back this plant about halfway or more once it has finished blooming, removing spent flower stalks, and a second bloom might occur in late fall. In fall, you can cut this perennial back to 2 inches above the soil line if the plant is diseased or you consider the dead stems unattractive.Do Black Eyed Susans need to be deadheaded?Deadheading Black Eyed Susan flowers is not necessary but can prolong the blooming period and prevent the plants from seeding all over your landscape. After the blooms fade, the flowers turn to seed, which goldfinches, chickadees, nuthatches and other birds feed on throughout the fall and winter.