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Papaver californicum

An annual, California-endemic poppy that grows in chaparral and oak woodlands, often in recently burned areas, with orange flowers and seeds that germinate after smoke.

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Common Names

Fire Poppy, Western Poppy, California Poppy, Cup of Gold, Golden Poppy, California Sunlight

Summary

Fire poppy, or western poppy, is an endemic California annual herb occurring in chaparral, oak woodlands, and disturbed open sites, especially after fires. It grows 0.5–2 ft tall with nodding buds on slender stems, has blue-green, lacy foliage, and bears four orange petals with green bases atop long brown seed pods; blooms in spring (April–May) and flowers are short‑lived.

Grow from seed by direct sow in spring after last frost or in autumn, sowing 1/4 inch deep and 8–10 inches apart; germination occurs in 2–3 weeks with thinning as needed. In pots, use good drainage, surface-sow seeds, provide ample sun, and thin after plants reach about 5 inches. The plant tolerates drought and requires minimal watering, preferring well‑drained, poorer soils and full sun to partial shade; it is a prolific self-seeder and seeds can lie dormant for years, with smoke acting as a germination trigger after fire. Harvest includes cutting flowers in the morning and collecting seeds when pods dry; flowers and leaves are edible, and health-related uses include stress relief, sleep aid, anti-anxiety, and antidepressant properties.

Lifecycle

Annual, Biennial, Perennial

Height

6-24 inches

Spread

6 inches

Hardiness Zones

Zones 3-8+

Sunlight Requirements

Ideally full sun; tolerates partial shade.

Soil Type

Well-drained soil, dry to mesic, tolerant of low fertility, including sandy soil

Soil Drainage

Well-drained soil

Bloom Color

Orange to Yellow

Bloom Time

Spring

Foliage Color

Blue-green

Fall Foliage Color

Yellow to orange

Leaf Lifecycle

Deciduous

Growth Rate

Annual

Seasons of Interest

Spring, Summer, Fall

Propagation Methods

Seeds

Attracts Wildlife

Attracts bees, butterflies, and other pollinators

Taxonomy

Taxonomic Rank
Species
Author
A.Gray
Publication
Proc. Amer. Acad. Arts 22: 323 1887

Superior Taxa

Kingdom
Plantae
Subkingdom
Pteridobiotina
Phylum
Angiosperms
Order
Ranunculales
Family
Papaveraceae
Subfamily
Papaveroideae
Tribe
Papavereae
Genus
Papaver

Synonyms

Papaver lemmonii

References

Western Poppy. calscape.org.
Papaver californicum. ebcnps.org.
Papaver californicum - FNA. floranorthamerica.org.
Meet the California Poppy: Growing + Care Guide. gardentherapy.ca.
Growing California Poppy. permacultureplants.com.
USDA Plants Database. plants.sc.egov.usda.gov.
Papaver californicum. rareplants.cnps.org.
Papaver californicum. rareplants.ebcnps.org.
Plant of the Month - Fire Poppy. smmtc.org.
Fire Poppy (Papaver californicum) - TheBackCountry. thebackcountry.varnell.org.
Papaver californicum. calflora.org.
California Poppy - Interesting Facts. gardenia.net.
How to Grow California Poppy (E. californica) | Jo…. johnnyseeds.com.
Papaver californicum | western poppy /RHS. rhs.org.uk.
Papaver californicum (Western poppy) | Native Plan…. wildflower.org.
World Flora Online. worldfloraonline.org. June 2024.