North America Native Plant

Spinster’s Blue Eyed Mary

Botanical name: Collinsia sparsiflora var. collina

USDA symbol: COSPC

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Collinsia solitaria Kellogg (COSO3)   

Spinster’s Blue Eyed Mary: A Charming California Native Annual Meet one of California’s most delightfully named wildflowers: spinster’s blue eyed Mary (Collinsia sparsiflora var. collina). Don’t let the quirky name fool you – this charming annual is anything but lonely in the garden! With its petite stature and enchanting bicolored ...

Spinster’s Blue Eyed Mary: A Charming California Native Annual

Meet one of California’s most delightfully named wildflowers: spinster’s blue eyed Mary (Collinsia sparsiflora var. collina). Don’t let the quirky name fool you – this charming annual is anything but lonely in the garden! With its petite stature and enchanting bicolored blooms, this native beauty brings authentic California charm to any landscape.

What Makes Spinster’s Blue Eyed Mary Special

This lovely little forb is a true California native, found exclusively in the Golden State. As an annual plant, spinster’s blue eyed Mary completes its entire life cycle in one growing season, making it a perfect choice for gardeners who enjoy seasonal variety and natural succession in their landscapes.

The plant produces delicate flowers that showcase nature’s artistry with their distinctive two-toned appearance – typically featuring white upper petals and striking blue lower petals that give the plant its blue eyed common name. These small but numerous blooms create a beautiful carpet effect when planted in groups.

Geographic Distribution

Spinster’s blue eyed Mary is endemic to California, where it thrives in the state’s diverse ecosystems. This variety specifically calls California home, making it an excellent choice for gardeners looking to support local biodiversity and create authentic regional landscapes.

Why Grow Spinster’s Blue Eyed Mary?

There are several compelling reasons to include this native annual in your garden:

  • Supports native pollinators and beneficial insects
  • Requires minimal maintenance once established
  • Adds authentic California character to wildflower gardens
  • Excellent for naturalizing large areas
  • Drought tolerant when mature
  • Self-seeds readily for natural garden succession

Garden Design and Landscape Uses

Spinster’s blue eyed Mary shines in several garden settings:

  • Native plant gardens: Perfect for authentic California landscapes
  • Wildflower meadows: Creates beautiful naturalized displays
  • Rock gardens: Thrives in well-drained conditions
  • Pollinator gardens: Attracts beneficial insects and small native bees
  • Seasonal color areas: Provides spring and early summer interest

Growing Conditions and Care

This adaptable native is relatively easy to grow when given conditions similar to its natural habitat:

  • Sunlight: Partial shade to full sun
  • Soil: Well-drained soils; tolerates various soil types
  • Water: Moderate water during establishment, drought tolerant once mature
  • USDA Zones: 8-10 (ideal for California’s Mediterranean climate)

Planting and Establishment Tips

Success with spinster’s blue eyed Mary starts with proper planting timing and technique:

  • Best planting time: Direct seed in fall for natural winter stratification
  • Seed preparation: No special treatment needed for fresh seed
  • Spacing: Scatter seed for natural, informal appearance
  • Germination: Seeds typically germinate with winter rains
  • Maintenance: Minimal care required; allow plants to self-seed for future seasons

Supporting California’s Ecosystem

By choosing spinster’s blue eyed Mary for your garden, you’re doing more than just adding pretty flowers. You’re supporting California’s native ecosystem by providing habitat and food sources for local wildlife, including native pollinators that have co-evolved with this plant over thousands of years.

This charming annual proves that sometimes the most unassuming plants can make the biggest impact. With its easy-going nature and authentic California heritage, spinster’s blue eyed Mary deserves a place in every Golden State garden that celebrates the beauty of native flora.

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