North America Native Plant

Drypark Pea

Botanical name: Lathyrus bijugatus

USDA symbol: LABI2

Life cycle: perennial

Habit: vine

Native status: Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Lathyrus bijugatus T.G. White var. sandbergii (LABIS2)  âš˜  Lathyrus lanszwertii Kellogg var. sandbergii (T.G. White) Broich (LALAS)   

Drypark Pea: A Delicate Native Wildflower for Western Gardens If you’re looking to add some delicate charm to your native plant garden, meet the drypark pea (Lathyrus bijugatus) – a lovely little wildflower that’s been quietly beautifying western landscapes for centuries. This unassuming perennial might not grab headlines like some ...

Drypark Pea: A Delicate Native Wildflower for Western Gardens

If you’re looking to add some delicate charm to your native plant garden, meet the drypark pea (Lathyrus bijugatus) – a lovely little wildflower that’s been quietly beautifying western landscapes for centuries. This unassuming perennial might not grab headlines like some showier natives, but it has a gentle appeal that makes it perfect for gardeners who appreciate subtle beauty.

What Makes Drypark Pea Special?

Drypark pea is a native perennial forb that belongs to the pea family, and you’ll know it’s related to garden peas the moment you see its characteristic compound leaves and delicate tendrils. This herbaceous plant stays relatively low to the ground and produces small but charming purple to pink flowers that look like tiny sweet pea blossoms.

As a true western native, drypark pea calls home to a impressive range spanning from British Columbia down to California and east to Montana. You’ll find it naturally growing in Idaho, Oregon, and Washington as well, making it a fantastic choice for gardeners throughout the Pacific Northwest and western mountain regions.

Why Your Garden (and Local Wildlife) Will Love It

Here’s where drypark pea really shines – it’s a pollinator magnet! Those sweet little flowers are perfect landing pads for native bees and butterflies, providing them with important nectar sources. In a world where pollinators need all the help they can get, adding plants like drypark pea to your landscape is like setting up a roadside diner for hungry beneficial insects.

Beyond its wildlife benefits, this plant is wonderfully low-maintenance once established. It’s naturally drought-tolerant, which makes perfect sense given its native habitat, and it doesn’t require the constant attention that many non-native garden plants demand.

Where Does Drypark Pea Fit in Your Landscape?

Think of drypark pea as nature’s ground cover with a twist. It works beautifully in:

  • Wildflower meadows and naturalistic plantings
  • Native plant gardens focused on regional species
  • Restoration projects and habitat gardens
  • Areas where you want low-maintenance, drought-resistant coverage

This isn’t a plant that demands center stage – instead, it plays a supporting role that helps tie together more dramatic native plantings while providing important ecological benefits.

Growing Drypark Pea Successfully

The good news for western gardeners is that drypark pea is adapted to USDA hardiness zones 4-8, covering most of the mountainous and Pacific coast regions where it naturally occurs.

Ideal Growing Conditions:

  • Sunlight: Full sun to partial shade (it’s quite adaptable)
  • Soil: Well-draining soil is essential – this plant doesn’t like wet feet
  • Water: Drought-tolerant once established, but benefits from occasional water during dry spells
  • Soil type: Not particularly picky, but prefers soils that aren’t too rich or heavily amended

Planting and Care Tips:

Getting drypark pea started is relatively straightforward, though like many natives, it appreciates being treated more like a wildflower than a pampered garden plant. Here’s how to set it up for success:

  • Sow seeds in fall or early spring when natural moisture will help with germination
  • Lightly rake seeds into the soil surface – they don’t need deep planting
  • Water gently until established, then reduce watering as the plant matures
  • Avoid over-fertilizing, which can lead to excessive foliage at the expense of flowers
  • Allow plants to go to seed if you want them to naturalize in your garden

The Bottom Line on Drypark Pea

While drypark pea might not be the most dramatic addition to your native plant collection, it’s exactly the kind of steady, reliable performer that makes western gardens both beautiful and ecologically valuable. It offers delicate beauty, supports local wildlife, and asks for very little in return – qualities that make it a winner in our book.

If you’re building a native plant garden in the western states or looking to add more pollinator-friendly options to your landscape, drypark pea deserves a spot on your consideration list. Sometimes the most valuable garden residents are the ones that work quietly behind the scenes, and this charming little native does exactly that.

Drypark 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 bijugatus T.G. White - drypark pea

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