Sea Dahlia

(Coreopsis maritima)

Sea Dahlia (Coreopsis maritima)

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Estimated Native Range
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Summary

Coreopsis maritima, commonly known as Sea Dahlia, is a deciduous perennial herb that thrives in coastal sage scrub and chaparral habitats, primarily found in California and Northwestern Mexico. It typically grows to a height of 10–40 cm, occasionally reaching up to 80 cm (4 to 32 inches). Sea Dahlia is characterized by its lanceolate phyllaries, which are 12–20 mm long, numbering 12–13, though sometimes more. The plant displays vibrant yellow flower heads, each borne singly or in pairs on peduncles 15 to 30 cm long, with the potential for up to 4 or more heads per stem. Flowering occurs from late winter to early summer, and the blooms are highly attractive to pollinators.

Sea Dahlia is valued for its bright yellow flowers that add a splash of color to gardens and landscapes. It is well-suited for use in native plant gardens, coastal landscapes, and as a border plant. This plant is drought-tolerant, making it an excellent choice for water-wise gardening. It prefers full sun exposure and is adaptable to various soil types, provided they have good drainage. While generally low-maintenance, it may require occasional deadheading to promote continued blooming.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 1-3 feet
  • Width: 1-3 feet
  • Growth Rate: Rapid
  • Flower Color: Yellow
  • Flowering Season: Spring
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun
  • Water: Low, Medium
  • Drainage: Fast

Common Uses

Bee Garden, Bird Garden, Butterfly Garden, Deer Resistant, Drought Tolerant, Groundcover, Hummingbird Garden, Low Maintenance, Rabbit Resistant, Salt Tolerant, Showy Flowers

Natural Habitat

Coastal sage scrub and chaparral

Other Names

Common Names: Sea-Dahlia

Scientific Names: , Coreopsis maritima, Leptosyne maritima, Tuckermannia maritima,

GBIF Accepted Name: Coreopsis maritima (Nutt.) Hook.fil.