| Scientific Name: | Nuphar polysepala |
| Common Name: | yellow pond lily |
| Family Name: | Nymphaeaceae |
| Origin: | B.C. west of Cascades, U.S. - northeast, U.S. - northwest |
| Hardiness Zone: | Zone 4: (-34 to -29 °C) |
| Plant Type: | Aquatic plant |
| Mature Size: | 1.3 - 2.0m x 0.6 - 1.0m (height x width) |
| Habit: | Spreading |
| Form: | Creeping / Mat-like |
| Texture: | Very coarse |
| Landscape Uses: | Aquatic - ponds, Wetland - bogs, Wildlife food |
| Exposure: | Full sun, Part sun/part shade |
| Soil or Media: | Bog |
| Leaves: | Simple, Basal, Leathery, Glabrous, Lustrous, Ovate, Entire, Undulate (wavy) |
| Flowers: | Flowers solitary, Yellow, Jun-Jul |
| Fruit: | Capsule, Green-yellow, Aug-Sep |
| Key ID Features: | |
| Aquatic floating plant with rhizomes, stems, and petioles below water; leaves floating, ovate, most 20-40cm long x 15-25cm wide; flowers cup-shaped, 5-10cm wide, (6-)9(-12) yellow petal-like sepals, Jun-Jul.; capsules berry-like 4-6(-9)cm long x 3.5–6 cm wide, seeds ~5mm long in a "jelly". | |