Silphium perfoliatum
Common Name(s):
- Phonetic Spelling
- SIL-phee-um pur-foe-lee-AY-tum
- Description
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Tall and large, this plant is good for prairie, native or wildflower gardens and naturalized areas. May self-seed.
Site: Open woods, meadows, prairies, thickets
- 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:
- perfoliatum
- Family:
- Asteraceae
- Recommended Propagation Strategy:
- Seed
- Country Or Region Of Origin:
- Southeastern US
- Dimensions:
- Height: 4 ft. 0 in. - 8 ft. 0 in.
- Width: 4 ft. 0 in. - 5 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Perennial
- Wildflower
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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
- Soil Drainage:
- Good Drainage
- Moist
- Occasional Flooding
- NC Region:
- Mountains
- Piedmont
- USDA Plant Hardiness Zone:
- 3a, 3b, 4a, 4b, 5b, 5a, 6a, 6b, 7a, 7b, 8a, 8b, 9b, 9a
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Fruit:
- Display/Harvest Time:
- Summer
- Fruit Description:
- Displays from July to September
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Flowers:
- Flower Color:
- Gold/Yellow
- Flower Bloom Time:
- Fall
- Summer
- Flower Petals:
- 7 - 20 petals/rays
- Flower Size:
- 1-3 inches
- Flower Description:
- 2 to 3 in. flower head with 20 to 30 yellow petals. Blooms from June to August
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Leaves:
- Leaf Color:
- Green
- Leaf Type:
- Compound (Pinnately , Bipinnately, Palmately)
- Hairs Present:
- No
- Leaf Description:
- Two upper leaves surround the flower stalk, forming a shallow cup; large, rough, deeply pinnatified leaves; coarsely toothed lower leaves contract into a winged stalk
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Stem:
- Stem Is Aromatic:
- No
- Stem Buds:
- Smooth/Hairless
- Stem Surface:
- Smooth (glabrous)
- Stem Description:
- smooth, square stems
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Landscape:
- Attracts:
- Butterflies
- Songbirds
