Prairie Dock (Silphium terebinthinaceum) in the Silphiums Database

Common names:
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Give a thumbs up Prairie rosinweed

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: Mesic
Minimum cold hardiness: Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Maximum recommended zone: Zone 9b
Plant Height: 36 - 100 inches
Plant Spread: 24 - 48 inches
Fruit: Edible to birds
Flowers: Showy
Flower Color: Yellow
Bloom Size: 1"-2"
2"-3"
3"-4"
Flower Time: Summer
Late summer or early fall
Underground structures: Taproot
Uses: Will Naturalize
Edible Parts: Fruit
Wildlife Attractant: Bees
Birds
Butterflies
Propagation: Seeds: Stratify seeds: 3 months at 40 degrees
Pollinators: Various insects
Containers: Not suitable for containers

Image

Photo gallery:
Location: Van Buren, MODate: 2018-08-19
By DraDiana
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Location: Van Buren, MODate: 2018-08-19
By DraDiana
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Location: Van Buren, MODate: 2018-08-29
By DraDiana
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Location: Van Buren, MODate: 2018-08-19
By DraDiana
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Location: Van Buren, MODate: 2018-08-19
By DraDiana
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Location: Chicago Botanic Garden in Glencoe, ILDate: 2018-08-23mass planted by North Lake
By ILPARW
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Location: Chicago Botanic Garden in Glencoe, ILDate: 2018-08-23basal foliage
By ILPARW
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Location: Chicago Botanic Garden in Glencoe, ILDate: 2018-08-23yellow flowers on scapes
By ILPARW
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Photo Courtesy of Prairie Nursery. Used with Permission
By Joy
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Location: Nennah, WisconsinDate: 2012-08-18basal leaves
By ILPARW
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Photo Courtesy of Prairie Nursery. Used with Permission
By Joy
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Photo Courtesy of Prairie Nursery. Used with Permission
By Joy
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Photo Courtesy of Prairie Nursery. Used with Permission
By Joy
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Location: Morton Arboretum in Lisle, IllinoisDate: 2013-07-19basal leaves
By ILPARW
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Comments:
Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Feb 18, 2018 5:18 PM

Prairie-Dock is a major prairie forb, also of native meadows farther east. It gets its name from its large, coarse, oval or heart-shaped leaves that grow about 1.5 to 2 feet long at the base of the plant. It sends up tall scapes to 6 to 9 feet high with the yellow sunflower-like flowers that bloom in July into September near the top. It forms a taproot and sends out some rhizomes that slowly increase the clump. Its native range is from the southeast tip of Ontario & Ohio to Minnesota down into Arkansas, Mississippi, and South Carolina in wet to mesic soils. It is sold by a good number of native plant nurseries in the Midwest for prairie restorations and naturalistic, native plant landscapes.

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Discussion Threads about this plant
Thread Title Last Reply Replies
Anyone Familiar with Restoring Prairie? by Chillybean Feb 15, 2016 1:15 PM 24

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