Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Grindelia stricta is a species of flowering plant in the Asteraceae (Sunflower) family known by the common names Coastal Gumweed and Oregon Gumweed. It is native to the west coast of North America from California to Alaska, where it is a resident of coastal plant communities such as those in marshes and beaches. In California it is found from the Channel Islands northwards, typically in close proximity to the coast. There are three recognized Varieties: This plant is variable in appearance, taking the form of a weedlike perennial herb forming low clumps to a sprawling subshrub growing erect to heights exceeding one meter. Its foliage and stems are green to rusty red or purplish and the plant may be hairy to hairless. The fleshy leaves are green, often with red edges and veining, and are up to 15 centimeters in length on large plants. The flower cluster holds one or more flower heads each up to 5 centimeters wide. The flower head is a cup of thick erect or recurved green phyllaries. Yellow disc florets fill the center of the flower head and there is a fringe of yellow ray florets around the circumference. The head produces copious white exudate, especially in the early stages of blooming. This exudate was used by native people as an adhesive.

Plant type

Perennial herb

Size

3 - 5 ft Tall
7 ft Wide

Form

Spreading

Growth rate

Moderate

Dormancy

Summer Semi-deciduous

Fragrance

None

Calscape icon
Color

Yellow, Red

Flowering season

Spring, Summer, Fall

Special uses

Groundcover, Deer resistant

Sun

Full Sun, Partial Shade

Water

Low, Moderate, Very Low

Summer irrigation

Max 3x / month once established

Ease of care

Easy

Cold tolerance

Tolerates cold to 30° F

Soil drainage

Fast, Standing

Soil description

Typically sandy. Tolerates saline soil..
Soil PH: 5.0 - 7.5

Maintenance

Deadhead to encourage flowering

Propagation

Rooted cuttings

Site type

Tidal flats, marshes, dunes, seabluffs and coastal strand where it receives extra moisture from fog and sea spray. Also occurs in coastal sage scrub in more upslope areas

Plant communities

Coastal Salt Marsh, Coastal Strand, Northern Coastal Scrub, Wetland-Riparian

Bats
Caterpillars
Butterflies

Butterflies and moths supported

0 confirmed and 10 likely

Confirmed Likely

Orange Tortrix Moth

Argyrotaenia franciscana

Cremastobombycia grindeliella

Dejongia californicus

Epinotia infuscana