North America Native Plant

Island Jepsonia

Botanical name: Jepsonia malvifolia

USDA symbol: JEMA

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Island Jepsonia: A Rare California Channel Islands Treasure Meet the island jepsonia (Jepsonia malvifolia), a charming little native that’s about as exclusive as plants get! This petite perennial forb calls California’s Channel Islands home, making it one of those special plants that truly captures the essence of California’s unique island ...

Rare plant alert!

Region: Conservation status by state

Status: S3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Island Jepsonia: A Rare California Channel Islands Treasure

Meet the island jepsonia (Jepsonia malvifolia), a charming little native that’s about as exclusive as plants get! This petite perennial forb calls California’s Channel Islands home, making it one of those special plants that truly captures the essence of California’s unique island ecosystems.

Where Does Island Jepsonia Come From?

Island jepsonia is native to California and grows naturally only on the Channel Islands, particularly Santa Rosa and Santa Cruz Islands. This incredibly limited range makes it a true California endemic – you won’t find this little beauty growing wild anywhere else in the world!

What Makes Island Jepsonia Special?

This delightful forb (that’s garden-speak for a non-woody flowering plant) brings a unique charm to any garden lucky enough to host it. Here’s what makes it stand out:

  • Distinctive kidney-shaped, rounded leaves that have a succulent-like appearance
  • Delicate white to pink flowers that dance on tall, slender stems above the foliage
  • Compact growth habit perfect for intimate garden spaces
  • Rare status that makes it a true conversation starter among plant enthusiasts

Important Note About Rarity

Before we dive into growing tips, here’s something crucial to know: island jepsonia has a Global Conservation Status of S3, meaning it’s considered vulnerable in the wild. With only 21 to 100 known occurrences and between 3,000 to 10,000 individuals estimated to exist, this plant is genuinely rare. If you’re interested in growing island jepsonia, please only obtain plants from reputable nurseries that propagate them responsibly – never collect from wild populations!

Where Island Jepsonia Thrives in Your Garden

This Channel Islands native is perfect for gardeners who love unique, drought-tolerant plants. It works beautifully in:

  • Rock gardens where its small stature can shine
  • Mediterranean-style landscapes
  • Succulent and drought-tolerant plant collections
  • Container gardens where you can control growing conditions
  • Native plant gardens focused on California species

Growing Conditions and Care

Island jepsonia has adapted to the unique conditions of California’s Channel Islands, so replicating those conditions is key to success:

Climate Requirements: This plant is best suited for USDA hardiness zones 9-11, as it’s sensitive to frost. If you live in a cooler area, consider container growing so you can protect it during winter.

Light Needs: Provide partial shade to filtered sunlight – think morning sun with afternoon protection, especially in hotter inland areas.

Soil Requirements: Excellent drainage is absolutely critical! Island jepsonia cannot tolerate soggy soil. Use a well-draining mix similar to what you’d use for succulents or Mediterranean plants.

Water Needs: Once established, this drought-tolerant native prefers minimal summer water. Water deeply but infrequently, allowing soil to dry completely between waterings.

Planting and Care Tips

Successfully growing island jepsonia requires attention to a few key details:

  • Plant in fall or early spring when temperatures are mild
  • Ensure containers or planting areas have excellent drainage
  • Protect from frost with covers or by moving containers indoors
  • Avoid overhead watering which can cause crown rot
  • Allow the plant to go dormant naturally – don’t force growth year-round

Supporting Pollinators and Wildlife

While small, island jepsonia’s delicate flowers provide nectar for native bees and other tiny pollinators. By growing this rare native, you’re not only preserving a piece of California’s natural heritage but also supporting the small creatures that depend on native plants.

Should You Grow Island Jepsonia?

Island jepsonia is perfect for the dedicated native plant gardener who appreciates rare and unusual species. It’s not a plant for beginners or those looking for showy, high-impact garden specimens. However, if you’re passionate about California natives, enjoy the challenge of growing unique plants, and can provide the specific conditions it needs, island jepsonia can be a rewarding addition to your collection.

Remember, with great rarity comes great responsibility – always source your plants ethically and help preserve this beautiful Channel Islands endemic for future generations to enjoy!

Island Jepsonia

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

Rosales

Family

Saxifragaceae Juss. - Saxifrage family

Genus

Jepsonia Small - jepsonia

Species

Jepsonia malvifolia (Greene) Small - island jepsonia

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