3-lobed Black-eyed Susan
Rudbeckia triloba
Numerous small, golden-yellow flowers (about 1–2 inches wide) with dark, chocolate-brown central disks.
Perennial
24-60"
Prefers full sun to partial shade. It is more shade-tolerant than the common Black-eyed Susan (R. hirta).
Average though it is quite adaptable. It can handle clay, loamy, or slightly rocky soils and has moderate drought tolerance once established.
Yes
Because it blooms so late and so profusely, it is a vital nectar source for bees, wasps, and butterflies preparing for winter or migration. It supports several species of Andrena bees (mining bees) that specialize in the Asteraceae family. Like its relatives, it serves as a larval host for the Silvery Checkerspot butterfly.