North America Non-native Plant

Viper’s Bugloss

Botanical name: Echium

USDA symbol: ECHIU

Life cycle: biennial

Habit: subshrub

Native status: Non-native, reproduces and persists in the wild in Alaska âš˜ Status ranges from native to a waif that isn't naturalizedCanada âš˜ Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in St. Pierre and Miquelon  

Viper’s Bugloss: A Striking But Non-Native Garden Addition If you’ve ever spotted towering spikes of brilliant blue flowers that seem to reach for the sky, you might have encountered viper’s bugloss (Echium). This eye-catching plant has made quite a name for itself across North America, though it’s far from home ...

Viper’s Bugloss: A Striking But Non-Native Garden Addition

If you’ve ever spotted towering spikes of brilliant blue flowers that seem to reach for the sky, you might have encountered viper’s bugloss (Echium). This eye-catching plant has made quite a name for itself across North America, though it’s far from home in its native Mediterranean region.

What Exactly Is Viper’s Bugloss?

Viper’s bugloss belongs to the genus Echium and goes by the wonderfully dramatic common name that sounds like it belongs in a medieval herbalist’s garden. Don’t let the intimidating name fool you – this plant gets its moniker from the spotted stems that supposedly resemble a viper’s skin, not from any dangerous qualities.

This herbaceous plant can live as an annual, biennial, or perennial depending on growing conditions. It’s what botanists call a forb – essentially a non-woody flowering plant that dies back to ground level each year.

Where You’ll Find It Growing

Here’s where things get interesting: viper’s bugloss has spread far beyond its Mediterranean homeland. Today, you can find it growing across an impressive range of North American locations, including Alberta, British Columbia, Alaska, Manitoba, New Brunswick, Arkansas, California, Nova Scotia, Ontario, Colorado, Prince Edward Island, Connecticut, Quebec, Delaware, Saskatchewan, District of Columbia, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, and Newfoundland.

It’s worth noting that viper’s bugloss is considered a non-native species that has naturalized across these regions, meaning it reproduces and persists in the wild without human intervention.

The Visual Appeal

What makes viper’s bugloss so captivating is its distinctive flowering habit. The plant produces tall, bristly spikes covered in tubular flowers that typically bloom in stunning shades of blue, though you might occasionally spot purple, pink, or white varieties. The flowers open progressively from the bottom of the spike to the top, creating a prolonged blooming period that can last several weeks.

The plant itself has a somewhat wild, untamed appearance with its hairy, spotted stems and rough-textured leaves, giving it a distinctly rustic charm that works beautifully in informal garden settings.

Garden Role and Landscape Use

Viper’s bugloss excels at creating dramatic vertical interest in the garden. Its towering flower spikes make excellent backdrop plants or can serve as striking focal points in naturalized areas, cottage gardens, or wild garden spaces. The plant particularly shines in xerophytic or drought-tolerant garden designs where its Mediterranean heritage gives it a natural advantage.

Growing Conditions and Care

This plant is refreshingly low-maintenance, which explains part of its success as a naturalized species. Viper’s bugloss thrives in:

  • Full sun locations
  • Well-drained, sandy, or rocky soils
  • Drought conditions once established
  • USDA hardiness zones 3-9 (varies by specific species)

The plant actually performs better in poor soils than in rich, fertile ground, making it perfect for those challenging garden spots where other plants struggle.

Pollinator Paradise

Here’s where viper’s bugloss truly shines – it’s absolutely beloved by pollinators. The tubular flowers provide excellent nectar sources for bees, butterflies, and other beneficial insects. If you’re looking to support pollinator populations, this plant delivers in spades with its long blooming period and abundant flowers.

Important Considerations

Before you rush to plant viper’s bugloss, there are a few things to consider. As a non-native species, it can self-seed readily and may spread beyond where you originally planted it. While this isn’t necessarily problematic, it’s worth monitoring if you prefer more controlled garden growth.

Since viper’s bugloss is non-native, you might want to consider some stunning native alternatives that provide similar benefits:

  • Wild bergamot (Monarda fistulosa) for pollinator appeal
  • Blazing star (Liatris species) for vertical flower spikes
  • Wild lupine (Lupinus perennis) for dramatic blue flowers
  • Dense blazing star (Liatris spicata) for similar spike-like blooms

The Bottom Line

Viper’s bugloss offers undeniable visual drama and pollinator benefits, making it an attractive option for gardeners seeking low-maintenance, drought-tolerant plants with striking flowers. While it’s non-native, it can certainly have a place in informal garden settings where its naturalized character fits the design vision.

Whether you choose to grow viper’s bugloss or opt for native alternatives, the key is creating a garden that supports local ecosystems while bringing you joy. Sometimes that means embracing plants from far-off places, and sometimes it means celebrating the incredible diversity that’s native to your own backyard.

Viper’s Bugloss

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

Lamiales

Family

Boraginaceae Juss. - Borage family

Genus

Echium L. - viper's bugloss

Species

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