North America Native Plant

Wallflower

Botanical name: Erysimum

USDA symbol: ERYSI

Life cycle: biennial

Habit: subshrub

Native status: It's either native or not native in Alaska âš˜ It's either native or not native in Canada âš˜ Native to Greenland âš˜ It's either native or not native in the lower 48 states  

Wallflowers: The Cheerful Cottage Garden Champions That Bloom Their Hearts Out If you’ve ever dreamed of a garden that greets you with cheerful, fragrant blooms and asks for very little in return, let me introduce you to wallflowers (Erysimum). These delightful plants might just become your new gardening obsession – ...

Wallflowers: The Cheerful Cottage Garden Champions That Bloom Their Hearts Out

If you’ve ever dreamed of a garden that greets you with cheerful, fragrant blooms and asks for very little in return, let me introduce you to wallflowers (Erysimum). These delightful plants might just become your new gardening obsession – or at least earn a permanent spot in your heart and flower beds.

What Exactly Are Wallflowers?

Wallflowers are charming members of the mustard family that come in annual, biennial, and perennial varieties. Don’t let their common name fool you – these aren’t shy, retiring plants! They’re actually quite the showoffs, producing clusters of four-petaled flowers in brilliant shades of yellow, orange, purple, and sometimes even deep burgundy. The best part? They smell absolutely divine, with a sweet, honey-like fragrance that’ll have you stopping to sniff every time you walk by.

As forbs (non-woody flowering plants), wallflowers form tidy clumps or spreading mats, depending on the variety. They typically reach 1-3 feet in height and spread about as wide, making them perfect for filling gaps in borders or cascading over rock walls.

Where Do Wallflowers Call Home?

Here’s where things get interesting with wallflowers – their native status is a bit complicated. While the genus Erysimum is native to Greenland, the situation is less clear for other parts of North America. However, these adaptable plants have made themselves at home across an impressive range, growing in states and provinces from Alberta to Alabama, and from British Columbia to Newfoundland.

This wide distribution speaks to their incredible adaptability – a trait that makes them excellent garden companions for novice and experienced gardeners alike.

Why Your Garden (and Local Pollinators) Will Love Wallflowers

Wallflowers are like that friend who always shows up with good vibes and never overstays their welcome. Here’s why they’re such garden gems:

  • Pollinator magnets: Bees, butterflies, and beneficial insects absolutely adore wallflower blooms
  • Long blooming season: Many varieties flower from late spring through summer
  • Drought tolerance: Once established, they’re surprisingly resilient in dry conditions
  • Low maintenance: Perfect for gardeners who want maximum beauty with minimal fuss
  • Versatile placement: Excellent in rock gardens, cottage gardens, borders, and containers

Growing Wallflowers: Easier Than You Think

The wonderful thing about wallflowers is that they’re quite forgiving and actually prefer to be treated a bit roughly – kind of like that low-maintenance friend who thrives on benign neglect.

Ideal Growing Conditions

Wallflowers are happiest when they get:

  • Full sun: At least 6 hours of direct sunlight daily
  • Well-draining soil: They absolutely hate wet feet – think Mediterranean garden conditions
  • Slightly alkaline soil: A pH between 6.5-7.5 is ideal
  • Good air circulation: This helps prevent fungal issues

Planting and Care Tips

Getting wallflowers established is refreshingly straightforward:

  • Start from seed: Direct sow in fall for spring blooms, or start indoors 6-8 weeks before last frost
  • Space properly: Give them 12-18 inches between plants for good air circulation
  • Water wisely: Water regularly during establishment, then reduce frequency once they’re settled
  • Deadhead regularly: Remove spent blooms to encourage continued flowering
  • Don’t overfeed: Too much fertilizer leads to lots of leaves but fewer flowers

USDA Hardiness and Seasonal Considerations

Most wallflower varieties are quite cold-hardy, typically thriving in USDA zones 3-9. The perennial types are particularly tough, while annual varieties give you the flexibility to try different colors and arrangements each year.

Perfect Garden Companions

Wallflowers play well with others and shine in:

  • Cottage gardens: Pair with roses, lavender, and catmint
  • Rock gardens: Perfect for tucking into crevices and cascading over walls
  • Mediterranean-style landscapes: Combine with rosemary, thyme, and other drought-tolerant herbs
  • Pollinator gardens: Plant alongside native wildflowers and other bee-friendly plants

A Word About Native Alternatives

While wallflowers aren’t problematic plants, if you’re passionate about supporting native ecosystems, consider exploring native alternatives that offer similar benefits. Look into native mustard family plants or other spring-blooming natives in your region that can provide comparable pollinator support and garden appeal.

The Bottom Line

Wallflowers are those reliable, cheerful plants that deliver consistent beauty without being drama queens. Whether you’re a weekend warrior gardener or someone who tends to forget about plants for weeks at a time, wallflowers will likely forgive your neglect and reward you with months of fragrant, colorful blooms. Just give them good drainage, plenty of sun, and the occasional deadheading session, and they’ll make your garden – and your local pollinators – very happy indeed.

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

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