North America Native Plant

Redwood Pea

Botanical name: Lathyrus glandulosus

USDA symbol: LAGL8

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Redwood Pea: A Rare California Native Worth Protecting in Your Garden If you’re looking to add a touch of California’s wild beauty to your garden while supporting local ecosystems, the redwood pea (Lathyrus glandulosus) might just be the perfect choice. This charming native perennial brings delicate flowers and ecological benefits ...

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 ⚘

Redwood Pea: A Rare California Native Worth Protecting in Your Garden

If you’re looking to add a touch of California’s wild beauty to your garden while supporting local ecosystems, the redwood pea (Lathyrus glandulosus) might just be the perfect choice. This charming native perennial brings delicate flowers and ecological benefits to landscapes throughout the Golden State, though its rarity makes it a particularly special addition to any native plant collection.

What Makes Redwood Pea Special?

Redwood pea is a California endemic, meaning it grows naturally nowhere else in the world. As a member of the legume family, this perennial forb produces the classic pea-like flowers that gardeners love, typically in shades of purple to pink. The plant has a climbing or trailing growth habit, making it versatile for different garden applications.

What sets this plant apart from other garden choices is its deep connection to California’s natural heritage. It’s not just another pretty flower – it’s a piece of the state’s ecological puzzle that has been growing here long before European settlement.

Where Does Redwood Pea Grow?

This native beauty is found exclusively in California, where it thrives in the state’s diverse climatic conditions from coastal areas to mountain regions. Its natural habitat gives us clues about where it performs best in cultivation.

A Plant That Needs Our Help

Here’s something important every gardener should know: redwood pea has a Global Conservation Status of S3, which means it’s considered vulnerable. This classification indicates the species is at risk due to its limited range, small population sizes, or other factors that make it susceptible to disappearing from the wild.

What does this mean for gardeners? It’s actually an opportunity to be part of the solution! By growing redwood pea in our gardens, we can help preserve this species for future generations. However, it’s crucial to source plants or seeds responsibly – always purchase from reputable native plant nurseries that propagate their stock rather than collecting from wild populations.

Why Your Garden (and Local Wildlife) Will Love It

Beyond its conservation value, redwood pea offers several benefits that make it an excellent garden choice:

  • Supports native pollinators with its attractive flowers
  • Requires minimal water once established, perfect for California’s dry climate
  • Works well as ground cover or trailing over retaining walls
  • Adds authentic California character to native plant gardens
  • Helps prevent soil erosion on slopes

Perfect Garden Spots for Redwood Pea

This versatile native fits beautifully into several garden styles:

  • Native plant gardens: A natural choice for authentic California landscapes
  • Woodland gardens: Thrives in partially shaded areas under trees
  • Naturalistic landscapes: Perfect for less formal, wild-looking spaces
  • Erosion control: Excellent for stabilizing slopes and banks

Growing Redwood Pea Successfully

The good news is that once you’ve found a source for this rare beauty, it’s relatively easy to grow. Redwood pea is adapted to California’s Mediterranean climate and doesn’t require fussy care.

Ideal Growing Conditions

  • Light: Partial shade to full sun
  • Soil: Well-draining soil (avoid heavy clay or waterlogged areas)
  • Water: Moderate water during establishment, then drought tolerant
  • Climate zones: USDA zones 8-10, perfect for California gardens

Planting and Care Tips

Plant redwood pea in fall or early spring when temperatures are mild. Choose a location with good drainage – this is crucial for success. Water regularly during the first growing season to help establish a strong root system, then reduce watering as the plant becomes drought tolerant.

Once established, redwood pea needs very little maintenance. It’s naturally adapted to California’s dry summers and wet winters, making it an ideal choice for water-wise gardens.

Making a Difference, One Garden at a Time

By choosing to grow redwood pea, you’re doing more than just adding another plant to your garden – you’re participating in conservation. Every garden that hosts this vulnerable native species creates a small sanctuary and helps ensure its survival.

Remember to always source your plants responsibly from reputable native plant nurseries, and consider sharing seeds with other native plant enthusiasts (with proper permissions) to help expand the number of gardens supporting this rare California treasure.

In a world where many native species face increasing pressure, gardeners have the power to make a real difference. Redwood pea offers the perfect opportunity to create beauty while contributing to conservation – now that’s what we call a win-win!

Redwood Pea

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

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Lathyrus L. - pea

Species

Lathyrus glandulosus Broich - redwood pea

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