North America Native Plant

Field Locoweed

Botanical name: Oxytropis campestris var. varians

USDA symbol: OXCAV

Life cycle: perennial

Habit: forb

Native status: Native to Alaska âš˜ Native to Canada  

Synonyms: Oxytropis campestris (L.) DC. ssp. varians (Rydb.) Cody (OXCAV2)  âš˜  Oxytropis hyperborea A.E. Porsild (OXHY)  âš˜  Oxytropis tananensis Yurtzev (OXTA)  âš˜  Oxytropis varians (Rydb.) K. Schum. (OXVA)   

Field Locoweed: A Hardy Arctic Native for Specialized Gardens If you’re looking for a plant that laughs in the face of winter and brings a splash of color to the most challenging garden spots, field locoweed might just be your new best friend. This tough-as-nails perennial has been thriving in ...

Rare plant alert!

Region: Conservation status by state

Status: S2S3Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ 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 ⚘

Field Locoweed: A Hardy Arctic Native for Specialized Gardens

If you’re looking for a plant that laughs in the face of winter and brings a splash of color to the most challenging garden spots, field locoweed might just be your new best friend. This tough-as-nails perennial has been thriving in some of North America’s harshest climates long before gardens were even a twinkle in a gardener’s eye.

What is Field Locoweed?

Field locoweed (Oxytropis campestris var. varians) is a hardy perennial forb that belongs to the legume family. Don’t let the name fool you – this isn’t your typical garden flower. It’s a specialized arctic and subarctic native that’s perfectly adapted to extreme conditions most plants would find downright hostile.

This compact herbaceous plant produces charming pea-like flowers in shades of purple to pink, set against silvery-hairy foliage that gives it a distinctive appearance. As a forb, it lacks woody tissue above ground, with its perennating buds safely tucked at or below the soil surface – a smart survival strategy for harsh climates.

Where Does It Come From?

Field locoweed is native to the northernmost reaches of North America, calling Alaska, northern Canada, British Columbia, Yukon, and the Northwest Territories home. This plant has evolved to thrive in regions where most gardeners would need serious winter gear just to check on their plants!

Should You Plant Field Locoweed?

Here’s where things get interesting – and a bit complicated. Field locoweed has a Global Conservation Status of S2S3Q, which means it’s somewhat uncommon in its native range. If you’re considering adding this arctic beauty to your garden, you’ll want to be extra careful about sourcing.

The Good News:

  • Incredibly cold hardy (thrives in USDA zones 1-4)
  • Attracts native pollinators, especially small bees
  • Unique aesthetic appeal with silvery foliage and purple-pink flowers
  • Low maintenance once established
  • Perfect for specialized alpine or arctic-themed gardens

The Considerations:

  • Rarity status means you should only source from reputable, responsible suppliers
  • Very specific growing requirements that can be challenging to replicate
  • Not suitable for warm climate gardens
  • Limited availability in the nursery trade

Growing Field Locoweed Successfully

If you live in an extremely cold climate and want to try growing field locoweed, here’s what this arctic native needs to thrive:

Growing Conditions

  • Climate: Extremely cold hardy – perfect for zones 1-4
  • Sunlight: Full sun exposure
  • Soil: Well-draining, lean soil (avoid rich, fertile conditions)
  • Moisture: Low to moderate moisture – avoid overwatering
  • Drainage: Excellent drainage is absolutely critical

Planting Tips

  • Best suited for rock gardens, alpine gardens, or specialized native plant collections
  • Plant in areas that mimic its natural arctic habitat
  • Avoid areas with standing water or poor drainage
  • Consider container growing for better control of growing conditions

Care and Maintenance

  • Minimal fertilization needed – this plant prefers lean conditions
  • Allow soil to dry between waterings
  • Mulch lightly with gravel or small stones rather than organic matter
  • Deadhead spent flowers if desired, but this isn’t necessary

The Bottom Line

Field locoweed is definitely not your average garden plant – and that’s exactly what makes it special. If you live in an extremely cold climate and are passionate about native plants, this arctic beauty could be a fascinating addition to a specialized garden. Just remember to source responsibly due to its rarity status, and be prepared to provide the specific conditions this hardy survivor needs to thrive.

For most gardeners, field locoweed will remain an interesting plant to learn about rather than grow. But for those adventurous enough to create an arctic-themed garden in the right climate, it offers a unique opportunity to cultivate a piece of the far north right in your backyard.

Field Locoweed

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 campestris (L.) DC. - field locoweed

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