The bright yellow, daisy-form flowers of silphiums are terrific for summer color; for drawing bees, butterflies, and other pollinators to your garden; and providing an abundant source of seeds for wild birds. They tend to be big plants, though, taking up a lot of valuable garden space. Rosinweed (Silphium integrifolium) could be a good choice if you’d like to enjoy the benefits of the genus on somewhat more refined-looking plants that typically top out at 5 to 6 feet. This species looks great in the middle to back of a border. Keep in mind that, like other silphiums, it can readily self-sow from seeds the birds miss, so you may prefer to grow this Central U.S. native in a meadow-type setting instead. Full sun. Perennial; Zones 3 to 9.
Collected in September 2022. At least 12 seeds. Ecotype unknown.
Please read the germination information as well before ordering.