
Native Plants A-Z
Dudleya caespitosa (dúd-lee-a sess-pí-to-sa), also called Coast Dudleya or Sea Lettuce, is a striking succulent native to California’s coastal bluffs and rocky slopes. Though not native to the San Lorenzo Valley, it thrives in the valley’s hottest, sunniest gardens where few other natives can survive such dry, exposed conditions. In these settings, its clustered rosettes anchor shallow soils and provide an ecological foothold for pollinators and other insects in summer.
This species is a master of survival in harsh habitats. Its powdery leaf coating acts as sunscreen, shielding it from scorching summer sun. In the SLV, this adaptation makes it a firewise and water-wise choice for dry slopes and rock gardens, where it can endure months without rain. During summer dormancy, rosettes shrivel and conserve moisture, then revive with winter rains — perfectly echoing the natural rhythm of the SLV’s wet and dry seasons.
From late spring into early summer, Coast Dudleya sends up branching stalks of bright yellow star-shaped flowers, an important nectar and pollen source for native bees, syrphid flies, butterflies, and hummingbirds. Its rosettes and the crevices in which they grow may also shelter small invertebrates, adding microhabitat structure to rocky gardens.
In gardens, Dudleya caespitosa adds sculptural beauty and resilience. Its colonies can live for decades, slowly expanding into large mats of rosettes. Used on hot rock walls, dry slopes, or container plantings, it creates living architecture while supporting pollinators and stabilizing fragile soils. For SLV gardeners seeking low-water, high-impact natives, this coastal specialist offers a way to transform the valley’s hottest sites into habitat-rich, fire-wise landscapes.
Sea Lettuce
Dudleya caespitosa
KEY DETAILS
Plant Type
- Perennial succulent
Light
- Full sun to part shade
Soil
- Requires well-drained, rocky, or sandy soils
- Perfect for hot, dry garden sites where other natives struggle
Size
- Individual rosettes 4–8 in tall and 6–12 in wide; colonies expand wider over time
Bloom Time
- Late spring to early summer; May–July
Sun Exposures per day
Shade: Less than 3 hours of direct sun
Part shade: 3-4 hours of direct sun
Part Sun: 5–6 hours of direct sun
Full Sun: Receives 6+ hours of direct sun