North America Native Plant

Beach Suncup

Botanical name: Camissonia cheiranthifolia suffruticosa

USDA symbol: CACHS

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Oenothera cheiranthifolia Hornem. ex Spreng. ssp. suffruticosa (S. Watson) Munz (OECHS2)   

Beach Suncup: A Golden Coastal Native for Your California Garden If you’re looking for a charming, low-maintenance native plant that brings sunshine to coastal gardens, meet the beach suncup (Camissonia cheiranthifolia suffruticosa). This delightful California native might not be the showiest plant in your garden, but it’s definitely one of ...

Beach Suncup: A Golden Coastal Native for Your California Garden

If you’re looking for a charming, low-maintenance native plant that brings sunshine to coastal gardens, meet the beach suncup (Camissonia cheiranthifolia suffruticosa). This delightful California native might not be the showiest plant in your garden, but it’s definitely one of the most reliable and ecologically valuable additions you can make to a coastal landscape.

What Makes Beach Suncup Special?

Beach suncup is a perennial forb—essentially a non-woody plant that comes back year after year. Don’t let the scientific classification intimidate you; this simply means it’s a herbaceous plant that lacks significant woody stems but has staying power in your garden. You might also see it listed under its botanical synonym, Oenothera cheiranthifolia ssp. suffruticosa, but we’ll stick with the friendlier common name.

This little golden gem produces cheerful four-petaled yellow flowers that seem to capture bottled sunshine. While each bloom might be modest in size, they appear reliably and add a bright pop of color to coastal plantings.

Where Does Beach Suncup Call Home?

Beach suncup is native to California, where it naturally thrives in coastal environments. As a true California native, it’s perfectly adapted to the state’s Mediterranean climate and coastal conditions. This plant has evolved alongside California’s native wildlife and plays an important role in coastal ecosystems.

Why Grow Beach Suncup in Your Garden?

There are several compelling reasons to consider adding beach suncup to your landscape:

  • Native plant benefits: As a California native, it supports local ecosystems and provides food for native pollinators
  • Low maintenance: Once established, it’s incredibly drought tolerant and requires minimal care
  • Coastal resilience: Perfect for seaside gardens where salt tolerance and wind resistance matter
  • Ground cover potential: Its low-growing habit makes it excellent for covering bare ground
  • Pollinator support: The flowers attract native bees and other beneficial insects

Perfect Garden Settings

Beach suncup shines in specific garden types and landscape designs:

  • Coastal gardens: Naturally at home in seaside landscapes
  • Native plant gardens: Essential for authentic California native plantings
  • Xeriscapes: Excellent choice for water-wise landscaping
  • Restoration projects: Valuable for coastal dune and habitat restoration
  • Rock gardens: Thrives in well-draining, sandy conditions

Growing Conditions and Care

Beach suncup is refreshingly easy to grow when you give it the right conditions:

Sunlight: Full sun is essential for best flowering and growth. This coastal native is accustomed to bright, unfiltered sunlight.

Soil: Sandy, well-draining soil is crucial. Beach suncup naturally grows in coastal dunes, so it prefers loose, fast-draining conditions. Heavy clay soils are not suitable.

Water: Once established, this plant is quite drought tolerant. Water regularly during the first growing season to help establish roots, then reduce watering significantly.

Climate: Best suited for USDA hardiness zones 9-11, primarily coastal California conditions. It needs the mild winters and dry summers of Mediterranean climates.

Planting and Care Tips

Getting beach suncup established is straightforward:

  • Timing: Plant in fall or early spring for best establishment
  • Spacing: Allow adequate space for the plant to spread as ground cover
  • Watering: Deep, infrequent watering once established mimics natural rainfall patterns
  • Fertilizing: Generally unnecessary; native soils provide adequate nutrition
  • Maintenance: Minimal pruning needed; remove spent flowers if desired

Is Beach Suncup Right for Your Garden?

Beach suncup is an excellent choice if you’re gardening in coastal California and want to support native ecosystems while enjoying a low-maintenance, drought-tolerant plant. It’s particularly valuable for gardeners interested in native plant landscaping, coastal restoration, or creating pollinator habitat.

However, this plant may not be suitable if you’re outside its natural climate range, prefer high-maintenance ornamental plants, or need something that thrives in heavy, poorly-draining soils.

For California coastal gardeners, beach suncup offers the perfect combination of ecological value, low maintenance, and quiet charm. It’s one of those wonderful native plants that works hard in the background, supporting local wildlife while asking very little in return. Sometimes the best garden additions are the humble ones that just keep on giving.

Beach Suncup

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Myrtales

Family

Onagraceae Juss. - Evening Primrose family

Genus

Camissonia Link - suncup

Species

Camissonia cheiranthifolia (Hornem. ex Spreng.) Raimann - beach suncup

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA