North America Native Plant

Spinster’s Blue Eyed Mary

Botanical name: Collinsia sparsiflora var. bruceae

USDA symbol: COSPB

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Collinsia bruceae M.E. Jones (COBR)   

Spinster’s Blue Eyed Mary: A Charming Native Wildflower for Western Gardens If you’re looking to add a touch of delicate charm to your native plant garden, spinster’s blue eyed Mary (Collinsia sparsiflora var. bruceae) might just be the perfect choice. This petite annual wildflower brings a splash of blue and ...

Spinster’s Blue Eyed Mary: A Charming Native Wildflower for Western Gardens

If you’re looking to add a touch of delicate charm to your native plant garden, spinster’s blue eyed Mary (Collinsia sparsiflora var. bruceae) might just be the perfect choice. This petite annual wildflower brings a splash of blue and white color to gardens while supporting local ecosystems—and despite its somewhat unfortunate common name, there’s nothing spinster-like about its ability to attract pollinators!

What Makes Spinster’s Blue Eyed Mary Special?

This lovely little forb is a true western native, naturally occurring across California, Oregon, and Washington. As an annual herb, it completes its entire life cycle in one growing season, but don’t let that fool you into thinking it’s high maintenance. Once established, this resilient wildflower often self-seeds, creating natural colonies that return year after year.

The plant produces small, snapdragon-like flowers that are typically blue and white, creating an enchanting carpet of color when grown in masses. Growing just 4-12 inches tall with a spread of 6-8 inches, it’s perfectly sized for the front of borders or tucked into rock gardens where its delicate beauty can be appreciated up close.

Why Plant Spinster’s Blue Eyed Mary?

There are several compelling reasons to consider adding this native beauty to your landscape:

  • Supports native ecosystems: As a native plant, it provides food and habitat for local wildlife and pollinators
  • Low maintenance: Once established, it’s quite drought tolerant and requires minimal care
  • Self-seeding: This annual readily self-sows, ensuring future generations in your garden
  • Pollinator magnet: The flowers attract beneficial insects like native bees and butterflies
  • Versatile: Works well in wildflower gardens, rock gardens, and naturalized areas

Growing Conditions and Care

Spinster’s blue eyed Mary is refreshingly undemanding when it comes to growing conditions. This adaptable native thrives in USDA hardiness zones 8-10, making it suitable for much of the Pacific Coast region.

Light requirements: This flexible wildflower performs well in partial shade to full sun conditions, though it seems to prefer some protection from intense afternoon sun in hotter climates.

Soil needs: Well-draining soil is key to success with this plant. It’s not particularly fussy about soil type but performs best in moderately fertile, well-drained conditions. Heavy, waterlogged soils should be avoided.

Water requirements: While young plants benefit from regular watering to get established, mature plants are quite drought tolerant. This makes them perfect for water-wise gardens and low-maintenance landscapes.

Planting and Care Tips

Getting started with spinster’s blue eyed Mary is straightforward:

  • Timing: Sow seeds in fall or early spring for best results
  • Seeding: Scatter seeds directly in the garden where you want them to grow—they don’t transplant well
  • Spacing: Allow 4-6 inches between plants for proper air circulation
  • Watering: Keep soil consistently moist until germination, then reduce watering frequency
  • Maintenance: Deadheading spent flowers can extend blooming, but leave some to self-seed for next year

Perfect Garden Companions

This charming wildflower pairs beautifully with other native plants that share similar growing conditions. Consider combining it with native grasses, other wildflowers, or low-growing shrubs to create a naturalistic garden that celebrates your region’s natural heritage.

The Bottom Line

Spinster’s blue eyed Mary is a delightful addition to any western native plant garden. Its combination of easy care, ecological benefits, and understated beauty makes it a winner for both novice and experienced gardeners. While it may be an annual, its self-seeding nature means you’ll likely enjoy its presence for years to come—proving that sometimes the best garden relationships are the ones that keep renewing themselves!

Spinster’s Blue Eyed Mary

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Collinsia Nutt. - blue eyed Mary

Species

Collinsia sparsiflora Fisch. & C.A. Mey. - spinster's blue eyed Mary

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