How much sun does Giant coreopsis need?

Giant coreopsis grows best in full sun conditions.

When does Giant coreopsis bloom?

Giant coreopsis blooms in February, March, and April.

Where is Giant coreopsis native?

Giant coreopsis (Leptosyne gigantea) is native to CA, per vouchered herbarium specimen records and regional native plant society lists.

Giant coreopsis

Name: Pollinator Patch
Author: Pollinator Patch

Leptosyne gigantea

Last reviewed: October 2026

Giant coreopsis (Leptosyne gigantea) is a perennial shrub native to CA. It blooms in February, March, and April. The flowers draw bees.

Toxicity unknown

Giant coreopsis (Leptosyne gigantea) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

full sun

Water

low

Size

36"–96" H × 36"–72" W

Bloom

Feb, Mar, Apr

Native to

Pollinators

bees

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Browse plants for this ecoregion

Central California Foothills and Coastal Mountains Southern California/Northern Baja Coast

A dramatic, sculptural shrub with a thick, woody, sparsely branched trunk topped by tufts of ferny leaves and large bright yellow daisy flowers in late winter and spring. It drops its leaves and appears bare during summer dry dormancy.

Growing Giant coreopsis

Grow Giant coreopsis in full sun and low water. Mature plants reach 36 to 96 inches tall and spread 36 to 72 inches wide.

Wildlife value

Its late-winter flowers are an early nectar source for native bees on exposed coastal bluffs.

Common questions

How much sun does Giant coreopsis need?: Giant coreopsis grows best in full sun conditions.
When does Giant coreopsis bloom?: Giant coreopsis blooms in February, March, and April.
Where is Giant coreopsis native?: Giant coreopsis (Leptosyne gigantea) is native to CA, per vouchered herbarium specimen records and regional native plant society lists.
What pollinators does Giant coreopsis attract?: Giant coreopsis draws bees.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

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