Botanical Name: Rudbeckia triloba
Height: about 1 m
Season of bloom: Late summer into early fall.
Growing Conditions: Part shade to sun. Thrives in poor soil
Wildlife benefits: Again, I refer you to the scholarly Illinois Wildflowers site. Of note is this species usefulness to a specialist bee: “. One of these bees, Andrena rudbeckiae, is a specialist pollinator (oligolege) of Rudbeckia and Ratibida coneflowers.”
From Ottawa Valley or eastern Ontario sources: Brown-eyed Susans occur in the wild in the Ottawa Valley; they are considered adventitious with agriculture. My seeds is of garden origin of unknown provenance.
Seeds: Truly one of the very easiest species to start from seed. Germination Code: C(30). Black miniature sunflower style seeds are small but smooth and relatively easy to manipulate. You can use the damp paper towel in a Ziplock freezer baggie in the refrigerator method of cold, moist stratification, if you want, to save space. Once a stand of Brown-eyed Susans is established in the garden, they will seed down to renew themselves. Many casual gardeners do not even realize that the individual plants are short-lived, as the patch comes back year after year.
Remarks: Smaller flowers than Black-eyed Susan, held in stiff clusters. Plants might live three years, so perhaps better considered very short-lived perennials, rather than biennials.
Similar species: Black-eyed Susan, Orange Coneflower
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