Silphium integrifolium
Common Name(s):
- Phonetic Spelling
- SIL-phee-um in-teg-rih-FOE-lee-um
- Description
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Rosinweed is a native herbaceous perennial in the aster family found in central USA and parts of Canada. It grows along roadsides and railroad tracks, in fields and pastures. The sunflower-like blooms occur late summer to fall on up to 6-foot tall stems and attract bees and butterflies.
It is adaptable to most soil types if they are well-drained in full sun to partial shade. It is drought tolerant once established. Use this plant in naturalized or native areas. It may be too weedy to use in a small garden.
- See this plant in the following landscape:
- Cultivars / Varieties:
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- Tags:
- Cultivars / Varieties:
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- Tags:
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Attributes:
- Genus:
- Silphium
- Species:
- integrifolium
- Family:
- Asteraceae
- Life Cycle:
- Perennial
- Recommended Propagation Strategy:
- Seed
- Country Or Region Of Origin:
- Central USA and into Canada
- Distribution:
- AL , AR , CO , IA , IL , IN , KS , KY , LA , MI , MN , MO , MS , NE , NM , OK , SD , TN , TX , WI
- Wildlife Value:
- Attracts bees and butterflies. Songbird will eat the seeds.
- Dimensions:
- Height: 2 ft. 0 in. - 6 ft. 0 in.
- Width: 1 ft. 0 in. - 3 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Native Plant
- Wildflower
- Woody Plant Leaf Characteristics:
- Deciduous
- Habit/Form:
- Erect
- Growth Rate:
- Medium
- Maintenance:
- Low
- Texture:
- Coarse
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Cultural Conditions:
- Light:
- Full sun (6 or more hours of direct sunlight a day)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Soil Texture:
- Clay
- Loam (Silt)
- Sand
- Soil pH:
- Neutral (6.0-8.0)
- Soil Drainage:
- Good Drainage
- Occasionally Dry
- Available Space To Plant:
- Less than 12 inches
- 12 inches-3 feet
- NC Region:
- Coastal
- Mountains
- Piedmont
- USDA Plant Hardiness Zone:
- 4a, 4b, 5b, 5a, 6a, 6b, 7a, 7b, 8b, 8a
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Flowers:
- Flower Color:
- Gold/Yellow
- Flower Inflorescence:
- Corymb
- Head
- Flower Bloom Time:
- Fall
- Summer
- Flower Petals:
- more than 20 petals/rays
- Flower Size:
- 1-3 inches
- Flower Description:
- 2-3 inch wide sunflower-like flowers with 30-40 rays and many disc florets and subtended by bracts with reflexed tips. Blooms July to Sept.
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Leaves:
- Woody Plant Leaf Characteristics:
- Deciduous
- Leaf Color:
- Green
- Leaf Feel:
- Rough
- Leaf Shape:
- Lanceolate
- Ovate
- Leaf Margin:
- Entire
- Serrate
- Hairs Present:
- Yes
- Leaf Length:
- > 6 inches
- Leaf Width:
- 1-3 inches
- Leaf Description:
- Rough, stalkless, large paired leaves with or without teeth with resinous juices. Up to 8 inches long, lance to ovate shaped, hairs on both surfaces.
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Stem:
- Stem Is Aromatic:
- No
- Stem Surface:
- Hairy (pubescent)
- Stem Description:
- Strong green stems
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Landscape:
- Landscape Location:
- Meadow
- Naturalized Area
- Woodland
- Landscape Theme:
- Pollinator Garden
- Design Feature:
- Border
- Small groups
- Attracts:
- Pollinators
- Songbirds
- Problems:
- Weedy
