Enormous White Flowers
Produces impressive, cup-shaped white flowers with delicate, crinkled petals that create a striking display in the garden.
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Romneya Coulteri, commonly known as Matilija Poppy or California Tree Poppy, is a spectacular perennial flowering plant admired for its enormous, delicate white flowers and prominent golden-yellow centers. Often called the Fried Egg Plant, it produces beautiful crepe-paper-like petals and attractive blue-green foliage. This unusual ornamental poppy adds dramatic beauty to sunny gardens, cottage landscapes, and spacious planting areas.
Produces impressive, cup-shaped white flowers with delicate, crinkled petals that create a striking display in the garden.
Features a prominent cluster of bright golden-yellow stamens that contrasts beautifully with the white petals.
Develops distinctive, deeply divided blue-green leaves that provide ornamental interest even when the plant is not flowering.
An established perennial that can return year after year in suitable growing conditions and spread through underground roots.
| Scientific Name | Romneya coulteri |
| Common Name | Matilija Poppy, California Tree Poppy, Fried Egg Plant |
| Plant Family | Papaveraceae |
| Seed Type | Perennial Ornamental Flower Seeds |
| Plant Type | Herbaceous Perennial / Subshrub |
| Flower Color | Pure White with Golden-Yellow Centers |
| Flower Shape | Large Cup-Shaped Flowers with Crinkled Petals |
| Foliage Color | Blue-Green to Gray-Green |
| Growth Habit | Upright, Spreading, Root-Suckering Perennial |
| Approximate Mature Height | 1.5–2.5 metres |
| Approximate Mature Spread | 1–1.5 metres or more, depending on growing conditions |
| USDA Hardiness Zones | Approximately 6–9, depending on local conditions |
| Planting Season | Autumn, winter, or early spring, depending on climate and pretreatment |
| Seed Starting | Surface sowing or very light covering, following seed supplier instructions |
| Germination Time | Variable and potentially several weeks to several months |
| Germination Temperature | Follow the supplier's species-specific germination instructions |
| Sunlight | Full Sun |
| Soil Requirements | Well-drained, sandy or loamy soil |
| Watering | Moderate during establishment; avoid prolonged waterlogging |
| Flowering Season | Late spring to summer, depending on climate |
| Propagation | Seeds, root cuttings, and rooted suckers |
Bring extraordinary floral beauty to your garden with Romneya coulteri Poppy Seeds. Famous for its enormous white flowers, golden-yellow centers, and attractive blue-green foliage, this remarkable perennial creates an unforgettable landscape display. Provide plenty of sunshine, well-drained soil, and appropriate seed pretreatment to encourage successful establishment.
Discover helpful answers about Matilija Poppy seed germination, flowering, and garden care.
Romneya coulteri seeds can be challenging to germinate because they may have dormancy requirements. Depending on the seed source, cold stratification or smoke-based pretreatment may improve germination. Surface sowing in a well-drained medium and maintaining suitable moisture are also important. Follow the specific instructions supplied with your seeds.
Matilija Poppy is nicknamed the Fried Egg Plant because its enormous white petals surround a large golden-yellow center of stamens. The flower resembles a fried egg, making it one of the most recognizable ornamental California native plants.
Romneya coulteri is a relatively slow-establishing perennial. Plants grown from seed may take several years to reach flowering maturity, depending on germination success, climate, soil conditions, and overall plant development. Patience and suitable growing conditions are important when raising this unusual flowering plant.