Photo by Melody

PlantFiles: Giant Coreopsis
Coreopsis gigantea

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Coreopsis (kor-ee-OP-sis) (Info)
Species: gigantea (jy-GAN-tee-uh) (Info)

One vendor has this plant for sale.

3 members have or want this plant for trade.


36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)

18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)

USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun


Bloom Color:
Gold (Yellow-Orange)
Bright Yellow

Bloom Time:
Late Winter/Early Spring
Mid Spring

Grown for foliage

Other details:
Drought-tolerant; suitable for xeriscaping

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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There are a total of 25 photos.
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3 positives
No neutrals
No negatives

Gardeners' Notes:

Positive LAS2014 On Mar 20, 2014, LAS2014 from Peoria, AZ wrote:

I saw this plant growing in Claremont, California at the Rancho Santa Ana Botanic it!

Positive Kelli On Oct 6, 2004, Kelli from L.A. (Canoga Park), CA (Zone 10a) wrote:

Very unique California native plant. Grows only on or near the coast from San Luis Obispo or Santa Barbara County to western Los Angeles County and on some of the Channel Islands.

Positive palmbob On Apr 25, 2004, palmbob from Acton, CA (Zone 8b) wrote:

First saw these weird plants along the coast in Ventura county... they have smooth, woody stems up to 3' tall and topped with lacy, arched glaucous to lime green leaves. They grow right out of the cliff sides and though they get misted nearly every day in thick fogs, must survive on almost no water growing in very dry, sandy soil. During summer they are mostly dead looking stems and look like something that would grow on the moon.... at other times of the year a little sprig of fern-like foliage would sprout at the tips of these weird tubular curved structures. Some grow this as a pot plant, like a weird caudiciform. Tolerates frost down to 25F.


This plant has been said to grow in the following regions:

Fairfield, California
Fremont, California
Malibu, California
Rancho Palos Verdes, California
Richmond, California
San Leandro, California
Ventura, California

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