Silphium perfoliatum
Cup Plant
Yellow flowers that attract bees and parasitic wasps on branches up to 10′. Pairs of coarse-toothed leaves meet at and surround the square stem, forming a cup or reservoir that holds water, attracting birds and insects. Prefers moist to wet soils.
- Height: 6' – 8'
- Width: 24" – 36"
- Soil Conditions: Moist/Well Drained
- Flower Color: Yellow
- Bloom Time: July, August, September
- Hardiness Zone: 3 To 7
Plant Characteristics
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Attributes
- Fall Color
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Attracts Wildlife
- Attracts Wildlife
- Attracts Butterflies
-
Plant Habit
- Upright
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Light Conditions
- Sun
-
Native Plant Community
- Mesis Prairie
-
Flower Color
- Yellow
-
Flower Hue
- Light
-
Flower Type
- Head
-
Flower Height
- 6' to 8'
-
Foliage Color
- Green
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Leaf Texture
- Coarse
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Flower Form
- Single
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Flower Size
- 2"
-
Soil Moisture
- Moist/Well Drained
-
Prune Time
- Jan/Feb/March
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Growth Rate
- Fast
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Origin
- 90 Miles From Mg