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Cup Plant
Silphium perfoliatum
General Information
Plant Information
Plant Type:
Herbaceous Perennial
Sun Preference:
Full Sun * Part Sun
Soil Moisture Preference:
Medium-Wet * Medium
Plant Height:
4 to 6 feet
Plant Width:
2 to 4 feet
Plant Spacing:
2 to 4 feet
Flower Color:
Yellow
Flower timing:
July to September
Culture Information:
Tolerates:
Pests & Disease:
Wildlife Use:
Native to:
Knox County and East Tennessee
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