Romneya coulteri
Matilja Poppy, California Tree Poppy
Family: Papaveraceae Poppy
| Type | Perennial |
| USDA Hardiness range | 8A - 10B |
| Exposure | Full sun |
| Bloom color | White |
| Bloom time | Late Summer to Mid Fall |
| Water needs | Moist |
| Landscape uses | Border, massing |
| Height | 36" to 8' / 90cm to 2.40m |
| Spread | n/a |
| Growth rate | Moderate |
| Persistence | Deciduous, broadleaf |
| Bloom attributes | Fragrant flowers |
| Leaf color | Blue, green |
| Fruit color | n/a |
| Soil type | Loamy |
| Form | Spreading or horizontal, upright or erect |
| Attributes and features | Native to North America |