North America Native Plant

Menzies’ Wallflower

Botanical name: Erysimum menziesii

USDA symbol: ERME5

Life cycle: biennial

Habit: forb

Native status: Native to the lower 48 states  

Menzies’ Wallflower: A Rare Coastal Gem Worth Protecting If you’re passionate about native plants and conservation, Menzies’ wallflower (Erysimum menziesii) deserves a spot on your radar. This charming little wildflower might not be the showiest plant in the garden, but it’s got something far more precious—it’s a rare piece of ...

Rare plant alert!

Region: United States

Status: S1S3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ 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 ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: United States

Menzies’ Wallflower: A Rare Coastal Gem Worth Protecting

If you’re passionate about native plants and conservation, Menzies’ wallflower (Erysimum menziesii) deserves a spot on your radar. This charming little wildflower might not be the showiest plant in the garden, but it’s got something far more precious—it’s a rare piece of our natural heritage that needs our help to survive.

What Makes Menzies’ Wallflower Special

Menzies’ wallflower is a delightful forb—that’s garden-speak for a non-woody flowering plant—that calls the coastal regions of California and Oregon home. This biennial to perennial beauty produces clusters of cheerful yellow, four-petaled flowers that bloom from spring through summer, creating a sunny display against its narrow, lance-shaped leaves.

What sets this plant apart isn’t just its coastal charm, but its conservation status. Menzies’ wallflower is listed as endangered, making it one of those plants where every garden specimen could potentially make a difference for the species’ survival.

Where Does It Grow Naturally

This coastal native thrives in the sandy soils and salt-sprayed bluffs of California and Oregon’s coastlines. It’s perfectly adapted to the challenging conditions found where land meets sea—think well-draining sandy soils, salt-laden air, and the temperature-moderating effects of the Pacific Ocean.

Why Consider Growing Menzies’ Wallflower

Here’s where things get interesting for conservation-minded gardeners. By growing this endangered species, you’re essentially creating a backup population and supporting pollinator communities that depend on native plants. Plus, if you live in a coastal area with similar growing conditions, this plant is naturally suited to thrive in your garden with minimal fuss once established.

The benefits include:

  • Supporting an endangered native species
  • Attracting bees, butterflies, and other beneficial pollinators
  • Low-maintenance once established
  • Excellent for coastal, Mediterranean, or xeriscape garden designs
  • Works beautifully in rock gardens or as a border plant

Growing Conditions and Care

Menzies’ wallflower isn’t particularly demanding—it just has specific preferences shaped by its coastal heritage. This plant thrives in USDA hardiness zones 8-10, particularly in areas that mirror its native coastal environment.

Sunlight: Full sun is essential for healthy growth and flowering.

Soil: Well-draining sandy or gravelly soils work best. If you have heavy clay, consider creating raised beds or adding plenty of coarse sand and organic matter to improve drainage.

Water: Once established, this drought-tolerant plant needs minimal supplemental water. Overwatering is more likely to cause problems than underwatering.

Salt tolerance: Its coastal origins mean it can handle salt spray, making it perfect for oceanfront gardens.

Planting and Care Tips

The key to success with Menzies’ wallflower is thinking like the coast—drainage is everything. Plant in fall or early spring when temperatures are moderate. If starting from seed, scatter them on the soil surface in fall and let winter rains do the work.

Once established, this plant is refreshingly low-maintenance. It may self-seed if conditions are right, gradually naturalizing in suitable spots. Just be patient—as a biennial to perennial, it may take a season or two to really hit its stride.

A Word About Conservation

Here’s the important part: because Menzies’ wallflower is endangered, it’s crucial to source your plants or seeds responsibly. Never collect from wild populations—this can further harm already vulnerable communities. Instead, seek out reputable native plant nurseries or seed companies that ethically propagate this species.

Some nurseries specializing in rare natives may have Menzies’ wallflower available, or they might be able to special order it for you. You can also check with local native plant societies or botanical gardens, as they sometimes have seed exchange programs for rare species.

Is This Plant Right for Your Garden

Menzies’ wallflower is perfect for gardeners who want to make a conservation impact while creating beautiful, low-maintenance landscapes. It’s ideal if you:

  • Live in coastal California or Oregon
  • Have sandy, well-draining soil
  • Prefer drought-tolerant plants
  • Want to support pollinators with native plants
  • Are passionate about plant conservation

If you don’t live in its native range or don’t have suitable growing conditions, consider supporting Menzies’ wallflower conservation efforts in other ways, such as donating to organizations working to protect coastal habitats or volunteering with local native plant restoration projects.

The Bottom Line

Growing Menzies’ wallflower isn’t just about adding another pretty plant to your garden—it’s about becoming part of a conservation story. This endangered coastal native offers the chance to support biodiversity while creating a beautiful, low-maintenance landscape perfectly suited to coastal conditions. Just remember to source your plants responsibly, and you’ll be helping ensure that future generations can enjoy this charming piece of our natural heritage.

Menzies’ Wallflower

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Capparales

Family

Brassicaceae Burnett - Mustard family

Genus

Erysimum L. - wallflower

Species

Erysimum menziesii (Hook.) Wettst. - Menzies' wallflower

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