Helianthus decapetalus
ten-petaled sunflower
The ten-petaled sunflower (Helianthus decapetalus) is a sturdy, perennial plant that’s as hardy as it is beautiful. This sunflower loves full sun, so plant it in a spot that gets at least six hours of direct sunlight a day. It thrives in well-drained, loamy soil, though it can tolerate a variety of conditions. The plant can grow quite tall—up to 6 feet in some cases—so be prepared for a bit of a showstopper in your garden.
Its blooms are a cheerful yellow with 10 (hence the name!) long, narrow petals surrounding a dark center, making it a delightful addition to any garden that needs a bit of sunshine and height.
While it’s beautiful for us humans, Helianthus decapetalus is also a great source of sustenance for local wildlife. The seeds are a favorite of many bird species, including the Eastern Goldfinch and the Purple Finch, who snack on the seeds when the flowers dry out. It’s also a helpful plant for pollinators like butterflies—specifically the Black Swallowtail (Papilio polyxenes), which is attracted to the nectar. Not to forget, small mammals like the Eastern Chipmunk also appreciate the sunflower’s seeds and provide a bit of wildlife charm as they scurry around your garden.
This sunflower doesn’t mind a little neglect, which makes it perfect for gardeners who might occasionally forget to water. It’s pretty self-sufficient and can thrive in less-than-ideal conditions, making it a great choice for busy gardeners or those new to the gardening.
Plants can be purchased in-person or online (with in-person pick-up).
All online orders will be ready for pick-up 24-72 hours after purchase. You will receive an email to let you know when your order is ready. We kindly ask that you pick-up any orders within one week of purchase.
Photo by Tim Gibson
Helianthus decapetalus (ten-petaled sunflower)
type: herbaceous perennial sun needs: sun to part sun water needs: moist to dry soil height: 5' plant spacing: 2' distance bloom time: June - November bloom color: yellow Moderate deer resistance Can be aggressive. Supports at-risk insects: larval host for the Silvery Checkerspot and Gorgone Checkerspot Butterfly