North America Non-native Plant

Tangier Pea

Botanical name: Lathyrus tingitanus

USDA symbol: LATI

Life cycle: annual

Habit: vine

Native status: Non-native, reproduces and persists in the wild in Hawaii âš˜ Non-native, reproduces and persists in the wild in the lower 48 states  

Tangier Pea: A Charming Mediterranean Annual for Your Garden Meet the Tangier pea (Lathyrus tingitanus), a delightful annual climbing plant that brings a touch of Mediterranean charm to gardens across the western United States. While this pretty purple-flowered vine isn’t native to North America, it has found a home in ...

Tangier Pea: A Charming Mediterranean Annual for Your Garden

Meet the Tangier pea (Lathyrus tingitanus), a delightful annual climbing plant that brings a touch of Mediterranean charm to gardens across the western United States. While this pretty purple-flowered vine isn’t native to North America, it has found a home in several western states and offers gardeners an easy-to-grow option for adding quick color and coverage to their landscapes.

What Exactly is Tangier Pea?

Tangier pea is an annual forb—basically a non-woody flowering plant that completes its entire life cycle in one growing season. Originally from the Mediterranean region around Morocco (hence the Tangier in its name), this climbing vine has naturalized in California, Hawaii, Idaho, Oregon, Utah, and Washington, where it reproduces on its own in the wild.

As a member of the pea family, this plant produces the characteristic butterfly-shaped flowers that pea family plants are known for, typically in shades of purple-pink that are absolutely lovely against its delicate foliage.

Why Consider Growing Tangier Pea?

There are several reasons why gardeners might be drawn to this Mediterranean beauty:

  • Quick coverage: As an annual climber, it provides fast-growing coverage for fences, trellises, or unsightly areas
  • Attractive flowers: The purple-pink pea flowers are charming and bloom over an extended period
  • Pollinator friendly: Bees and butterflies appreciate the nectar-rich blooms
  • Low maintenance: Once established, it’s relatively easy to care for
  • Cottage garden appeal: Perfect for informal, romantic garden styles

Growing Conditions and Care

Tangier pea is quite accommodating when it comes to growing conditions, which partly explains why it’s been able to establish itself in various western states:

  • Sunlight: Prefers full sun but can tolerate some light shade
  • Soil: Thrives in well-drained soils; not too fussy about soil type
  • Water: Moderate water needs once established
  • Support: Provide a trellis, fence, or other support for its climbing tendrils

Planting and Care Tips

Getting started with Tangier pea is straightforward:

  • Direct sow seeds in spring after the last frost date
  • Plant seeds about 1/2 inch deep and 2-3 inches apart
  • Provide support structures early, as the plant will start climbing quickly
  • Water regularly during establishment, then reduce as the plant matures
  • Deadhead spent flowers to encourage continued blooming
  • Since it’s an annual, expect it to complete its cycle and die with the first frost

A Word About Native Alternatives

While Tangier pea isn’t considered invasive, gardeners interested in supporting local ecosystems might want to consider native alternatives that provide similar benefits:

  • Native wild peas (Lathyrus species native to your region)
  • Native vetches (Vicia species)
  • Regional native climbing or trailing wildflowers

These native options will provide even better support for local wildlife and pollinators while requiring less water and maintenance once established.

The Bottom Line

Tangier pea can be a lovely addition to informal gardens, especially for gardeners looking for quick seasonal coverage or cottage garden charm. While it’s not native to North America, it’s not considered problematic either. If you choose to grow it, enjoy its pretty flowers and easy-going nature, but also consider incorporating some native plants into your landscape to support local wildlife. After all, the best gardens often feature a thoughtful mix of plants that serve both aesthetic and ecological purposes!

Tangier 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 tingitanus L. - Tangier pea

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