Lupinus rivularis - Riverbank Lupine
| Description | Riverbank lupine is a shrubby perennial with upright whorls of purple and white pea-like flowers in spring. It is often seen in sandy gravelly areas near marshes and streams, but also tolerates well-drained garden soil. Attracts bees and butterflies such as the Painted Lady and Gray Hairstreak. |
| Plant Type | Biennial to short-lived perennial forb. |
| Flower Color | Purple, white. |
| Bloom Period | March-June. |
| Height at Maturity | 12"-48" |
| Plant Spacing | 12"-36" |
| Light Requirements | Sun to part shade. |
| Moisture Needs | Moist to wet. |
| Soil Type |
Sandy or well-drained. |