Cup Plant
Silphium perfoliatum
| Description: Leaves join at the stem forming a cup that holds water |
| Propagation: Seeds or plugs |
| Initial bloom (month and week): August W4 |
| Garden name: Sunny Wetland Garden |
| Color of flower: Yellow |
| Height: 4-10′ |
| Spread: 24″ |
| Family: Asteraceae |
| Soil type: Deep rich soils |
| Soil moisture: Drought tolerant |
| Light: Full sun |
| Zone: 4-8 |