| Scientific Name: | Lysimachia punctata |
| Common Name: | circle flower, yellow loosestrife |
| Family Name: | Primulaceae |
| Origin: | Europe |
| Hardiness Zone: | Zone 4: (-34 to -29 °C) |
| Plant Type: | Herbaceous perennial, Invasive plant |
| Mature Size: | 0.7 - 1.3m x 0.6 - 1.0m (height x width) |
| Habit: | Upright |
| Form: | Pyramidal - narrowly |
| Texture: | Medium - coarse |
| Landscape Uses: | Perennial border, Waterside planting |
| Exposure: | Full sun, Part sun/part shade |
| Soil or Media: | Humus rich |
| Leaves: | Simple, Whorled, Soft flexible, Pinnate venation, Pubescent, Ovate, Entire, Undulate (wavy) |
| Flowers: | Flowers clustered, Yellow, May-Jun-Jul |
| Fruit: | Capsule, Brown, Aug-Sep |
| Key ID Features: | |
| Leaves whorled, ovate, most 7-11cm long x 3-4.5cm wide; flowers also whorled, bright yellow, ~2cm wide, May-Jul. | |