North America Native Plant

Parry’s Oxytrope

Botanical name: Oxytropis parryi

USDA symbol: OXPA2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Parry’s Oxytrope: A Hardy Native Wildflower for Western Gardens If you’re looking for a tough, drought-tolerant native plant that can handle the challenging conditions of western landscapes, meet Parry’s oxytrope (Oxytropis parryi). This unassuming little wildflower might not be the showiest plant in your garden, but it’s got character and ...

Parry’s Oxytrope: A Hardy Native Wildflower for Western Gardens

If you’re looking for a tough, drought-tolerant native plant that can handle the challenging conditions of western landscapes, meet Parry’s oxytrope (Oxytropis parryi). This unassuming little wildflower might not be the showiest plant in your garden, but it’s got character and resilience that make it a valuable addition to the right setting.

What Is Parry’s Oxytrope?

Parry’s oxytrope is a native perennial forb that forms low, cushion-like clumps in the wild. As a forb, it’s an herbaceous plant without woody stems, putting all its energy into those lovely flowers and sturdy roots rather than building bark and branches. This plant is a true westerner, calling the mountains and high plains of eight states home.

Where Does It Grow Naturally?

This native beauty has made itself at home across the western United States, thriving in California, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, and Wyoming. You’ll typically find it growing in mountainous regions where it has adapted to harsh conditions including intense sun, temperature swings, and limited water availability.

Why Consider Parry’s Oxytrope for Your Garden?

There are several compelling reasons to give this native plant a spot in your landscape:

  • True drought tolerance: Once established, this plant requires minimal supplemental watering
  • Native pollinator magnet: The purple to pink pea-like flowers attract bees and other beneficial insects
  • Low maintenance: Perfect for gardeners who want beauty without constant fussing
  • Authentic western character: Adds genuine regional flavor to native plant gardens
  • Soil flexibility: Classified as facultatively upland, meaning it’s adaptable to various moisture conditions

What Does It Look Like?

Parry’s oxytrope won’t overwhelm you with size, but it makes up for it with charm. The plant produces clusters of small, pea-like flowers in shades of purple to pink that bloom in dense, upright racemes. The silvery-green compound leaves give the plant an attractive foliage backdrop even when it’s not flowering. Its low, cushion-forming growth habit makes it perfect for tucking into rock gardens or using as a ground cover in appropriate settings.

Where Does It Fit in Your Landscape?

This plant shines in specific garden styles and situations:

  • Rock gardens: Its compact size and drought tolerance make it ideal for rocky, well-draining situations
  • Alpine gardens: Perfect for recreating high-elevation plant communities
  • Native plant gardens: An authentic choice for western native landscapes
  • Xeriscaping: Excellent for water-wise landscaping projects
  • Naturalized areas: Great for meadow-style plantings in appropriate climates

Growing Conditions and Care

Success with Parry’s oxytrope comes down to understanding its mountain origins. Here’s what it needs:

Sunlight: Full sun is essential. This plant evolved in open, exposed conditions and won’t tolerate shade well.

Soil: Well-draining soil is absolutely critical. The plant prefers alkaline conditions and will struggle in heavy, clay soils that retain moisture. Sandy or rocky soils work best.

Water: Once established, minimal watering is needed. In fact, too much water can be detrimental. The plant’s facultatively upland status means it can handle some moisture variation but generally prefers drier conditions.

Climate: Hardy in USDA zones 3-7, making it suitable for areas with cold winters and relatively dry summers.

Planting and Establishment Tips

Getting Parry’s oxytrope established requires some patience and the right approach:

  • Timing: Plant in early spring or fall when temperatures are moderate
  • Soil preparation: Ensure excellent drainage by amending heavy soils with coarse sand or gravel
  • Spacing: Give plants room to spread naturally in their low, cushion-like form
  • Initial watering: Provide regular water during the first growing season, then gradually reduce
  • Transplanting caution: This plant develops a deep taproot, making it difficult to move once established

Potential Challenges

While Parry’s oxytrope is generally low-maintenance, there are a few things to watch for:

Poor drainage is the biggest enemy of this plant. If your soil doesn’t drain well naturally, you’ll need to create raised beds or significantly amend the soil. Overwatering, especially in humid climates, can lead to root rot and plant failure.

This plant also isn’t the fastest grower, so patience is required as it establishes and reaches maturity.

Is Parry’s Oxytrope Right for Your Garden?

Parry’s oxytrope is perfect for gardeners who appreciate subtle beauty and want to support native ecosystems. It’s especially valuable if you’re gardening in the western states where it naturally occurs and you want to create authentic regional landscapes.

However, this isn’t the plant for you if you want quick results, lush tropical looks, or have heavy, poorly draining soil that you can’t modify. It’s also not suitable for areas outside its natural hardiness range or for gardeners who tend to overwater their plants.

When grown in the right conditions, Parry’s oxytrope rewards patient gardeners with years of reliable blooms, minimal maintenance requirements, and the satisfaction of supporting native pollinators with a truly regional plant choice.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Arid West

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Great Plains

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Western Mountains, Valleys, and Coast

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Parry’s Oxytrope

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

Oxytropis DC. - locoweed

Species

Oxytropis parryi A. Gray - Parry's oxytrope

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