North America Native Plant

Skunkbush

Botanical name: Navarretia squarrosa

USDA symbol: NASQ

Life cycle: annual

Habit: forb

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

Synonyms: Gilia squarrosa (Eschsch.) Hook. & Arn. (GISQ)   

Skunkbush: A Humble Native Annual Worth Knowing Don’t let the name fool you – skunkbush (Navarretia squarrosa) might not win any beauty contests, but this unassuming little native annual has more to offer than meets the eye. While it may not be the showstopper of your garden, this modest wildflower ...

Skunkbush: A Humble Native Annual Worth Knowing

Don’t let the name fool you – skunkbush (Navarretia squarrosa) might not win any beauty contests, but this unassuming little native annual has more to offer than meets the eye. While it may not be the showstopper of your garden, this modest wildflower plays an important role in supporting local ecosystems and can be a valuable addition to naturalistic landscapes.

What is Skunkbush?

Skunkbush is a native North American annual forb, meaning it’s a soft-stemmed herbaceous plant that completes its entire life cycle in one growing season. Also known by its botanical name Navarretia squarrosa (formerly classified as Gilia squarrosa), this humble plant belongs to the phlox family and produces small, delicate flowers that may be easily overlooked but serve an important ecological purpose.

Where Does Skunkbush Grow Naturally?

This adaptable native species has a broad distribution across western North America, naturally occurring in British Columbia, California, Montana, Oregon, Washington, and even Pennsylvania. Its widespread presence across such diverse climates speaks to its resilience and adaptability, making it suitable for USDA hardiness zones 7-10.

Why Consider Skunkbush for Your Garden?

While skunkbush may not be the most ornamental choice, there are several compelling reasons to include it in your native plant palette:

  • True native credentials: Supporting plants indigenous to North America helps maintain local biodiversity
  • Pollinator support: The small flowers provide nectar for native bees and other beneficial insects
  • Low maintenance: As an annual adapted to local conditions, it requires minimal care once established
  • Ecological authenticity: Adds genuine native character to wildflower meadows and naturalized areas
  • Versatile growing conditions: Thrives in the well-drained, sunny spots where many plants struggle

Where Skunkbush Fits in Your Landscape

Skunkbush works best in informal, naturalistic settings rather than formal garden beds. Consider incorporating it into:

  • Native plant gardens focused on local flora
  • Wildflower meadows and prairie restorations
  • Areas where you want to encourage beneficial insects
  • Slopes or areas with poor soil that need stabilization
  • Transition zones between cultivated and wild areas

Its facultative upland status means it typically prefers non-wetland conditions but can tolerate occasional moisture, making it adaptable to various garden situations.

Growing Skunkbush Successfully

The beauty of growing native annuals like skunkbush lies in their simplicity. Here’s how to give them the best start:

Planting Conditions

  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soil; tolerates poor, sandy, or rocky conditions
  • Water: Drought tolerant once established; avoid overwatering
  • pH: Adaptable to various soil pH levels

Planting and Care Tips

  • Direct seed in fall or early spring when temperatures are cool
  • Scatter seeds on prepared soil and lightly rake in
  • Water gently until germination occurs
  • Once established, minimal watering is needed
  • Allow plants to self-seed for naturalized colonies
  • No fertilization necessary – natives prefer lean soils

Setting Realistic Expectations

Let’s be honest – skunkbush isn’t going to create dramatic garden focal points or generate compliments from neighbors. Its flowers are small and its overall appearance is rather modest. However, if you’re building a garden that prioritizes ecological function over flashy aesthetics, skunkbush earns its place through quiet contributions to biodiversity.

Think of it as a supporting player rather than the star of your garden show. It works best when combined with other native species that can provide more visual interest while skunkbush does its important work behind the scenes.

The Bottom Line

Skunkbush represents the understated beauty of native gardening – it may not demand attention, but it delivers authentic ecological value. If you’re committed to supporting native biodiversity and don’t mind trading some ornamental pizzazz for genuine conservation benefits, this humble annual deserves consideration. Just remember to manage expectations and pair it with more visually striking native companions for a balanced, beautiful, and beneficial garden.

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

Atlantic and Gulf Coastal Plain

FACU

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

Eastern Mountains and Piedmont

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

Skunkbush

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

Solanales

Family

Polemoniaceae Juss. - Phlox family

Genus

Navarretia Ruiz & Pav. - pincushionplant

Species

Navarretia squarrosa (Eschsch.) Hook. & Arn. - skunkbush

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