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Coreopsis maritima

Coreopsis maritima (Nutt.) Hook. f.

Sea Dahlia

Asteraceae (Aster Family)

Synonym(s): Tuckermannia maritima

USDA Symbol: COMA10

USDA Native Status: L48 (N)

Erect and robust, this perennial, grows quickly to 2-1/2 ft. high and 3 ft. wide. Bright-green leaves are two or three times cut into narrow lobes giving a ferny effect. Striking-yellow, daisy-like blooms occur at branch tips. Each flower head is surrounded by deep-green bracts.

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Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Up to about 30 inches tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: Yellow
Bloom Time: Feb , Mar , Apr , May , Jun

Distribution

USA: CA
Native Distribution: Extreme s. CA & adjacent Mex.
Native Habitat: Coastal bluffs & dunes below 200 ft.

Growing Conditions

Light Requirement: Sun
Soil Description: Sandy soil.
Conditions Comments: Sea dahlia reseeds readily. As the flower heads go to seed, the plants tend to look untidy. These mature flower heads can be cut off. This is a wind-tolerant plant which is intolerant of frost.

Propagation

Description: Easily grown from seed planted in fall. Mature plants may be increased by division.
Seed Treatment: Seeds of this genus generally germinate without pretreatment.
Commercially Avail: yes

Find Seed or Plants

Find seed sources for this species at the Native Seed Network.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Native Seed Network - Corvallis, OR

Bibliography

Bibref 995 - Native Landscaping from El Paso to L.A. (2000) Wasowski, S. and A. Wasowski

Search More Titles in Bibliography

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 36 - Jepson eFlora (2019) The Jepson Herbarium, University of California, Berkeley
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Coreopsis maritima in USDA Plants
FNA: Find Coreopsis maritima in the Flora of North America (if available)
Google: Search Google for Coreopsis maritima

Metadata

Record Modified: 2022-12-09
Research By: TWC Staff

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