Starry Rosinweed (Silphium asteriscus) is in a corner of my backyard, in a bed with Muhly Grass, Privet Senna and Narrowleaf Ironweed. They are beautiful daisy-like tall flowers that bloom from March into September or October. I clip the spent stems low to the ground. I have to say that Green Isle Gardens [Green Isle Gardens website] had a great suggestion to plant the Narrowleaf Ironweed in with it – when they are both in full bloom the yellow and deep purple just look stunning!
I always find the feel of the Rosinflower leaves surprising – stiff, a little hairy, a little sticky! The leaves are a deep green color and “firm”, not droopy. The buds are delicate looking and flowers are bright and with well-formed petals. The stems are tall and graceful. Even when the flowers die back, they provide an interesting sight in the garden. It is described as a prolific self-seeder, but I have not had that experience in my yard.
RESOURCES:
https://www.fnps.org/plants/plant/silphium-asteriscus
Starry Rosinflower – bud on the right, in bloom,
and past blooms (no petals, brown seeds)
June 2019 – Starry Rosinflower in full bloom
Starry Rosinflower with Narrowleaf Ironweed
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