Botanical Name

Romneya coulteri

Commonly known as Matilija Poppy

Romneya coulteri (Matilija Poppy)
Perennial

Enormous fried-egg flowers on blue-gray stems. California's largest native wildflower. Spreads aggressively.

Quick Reference
Bloom Season
May to Jul
USDA Zones
7-10
Sun
Full Sun
Water
Low - drought tolerant
Mature Height
4-8'
Bloom Colors
White
Native Species Deer Resistant Fragrant
Read the full Matilija Poppy growing guide →

Companion plants, planting tips, FAQ, and more

About This Name

Romneya coulteri is the scientific name used by botanists, nurseries, and seed catalogs to identify Matilija Poppy unambiguously. The genus Romneya places it within a specific plant family, and using the botanical name avoids the confusion that comes with regional common names. If you're shopping for Matilija Poppy, looking up plant care details, or comparing varieties, searching by Romneya coulteri will give you the most precise results.