Non-native Plants

Common Dogmustard

Erucastrum gallicum

USDA symbol: ERGA

annual forb

Alaska: non-native, naturalized
Canada: non-native, naturalized
Lower 48 states: non-native, naturalized
St. Pierre and Miquelon: non-native, naturalized

If you’ve ever wondered about those small yellow flowers popping up in disturbed soil around your garden, you might be looking at common dogmustard (Erucastrum gallicum). This unassuming member of the mustard family has quite the story to tell – and quite the range to show for it! Common dogmustard ...

Common Dogmustard: What Every Gardener Should Know About This Widespread Non-Native

If you’ve ever wondered about those small yellow flowers popping up in disturbed soil around your garden, you might be looking at common dogmustard (Erucastrum gallicum). This unassuming member of the mustard family has quite the story to tell – and quite the range to show for it!

What Exactly Is Common Dogmustard?

Common dogmustard is an annual to biennial forb that belongs to the Brassicaceae (mustard) family. As a forb, it’s a non-woody plant that completes its life cycle in one to two years. You might also see it listed under its synonym Brassica erucastrum in older gardening references.

This European native has made itself quite at home across North America, establishing populations from coast to coast. It’s one of those plants that proves how adaptable nature can be when given the chance.

Where You’ll Find Common Dogmustard

Talk about a well-traveled plant! Common dogmustard has spread across an impressive range, establishing itself in virtually every U.S. state and Canadian province. From Alaska’s challenging climate to Florida’s heat, from California’s diverse landscapes to Maine’s rocky soils – this plant has proven remarkably adaptable.

  • Species observed
  • No observations

Should You Plant Common Dogmustard in Your Garden?

Here’s where things get interesting. While common dogmustard isn’t typically considered a garden-worthy ornamental, it’s not necessarily a villain either. Since its invasive status isn’t clearly established, we can’t definitively say don’t plant it, but we also can’t enthusiastically recommend it.

Consider these factors:

  • It’s not native to North America, so it doesn’t provide the same ecological benefits as indigenous plants
  • Its appearance is rather weedy and not particularly ornamental
  • As a non-native species, it may compete with local flora
  • Its widespread distribution suggests it can be quite aggressive in spreading

Native Alternatives to Consider Instead

If you’re drawn to the mustard family’s characteristics, consider these native alternatives that will better support your local ecosystem:

  • Wild mustard species native to your region
  • Native wildflowers in the Brassicaceae family
  • Regional spring ephemerals that fill similar ecological niches

Growing Conditions and Characteristics

Should you encounter common dogmustard in your landscape (and you very well might, given its wide distribution), here’s what to expect:

This adaptable plant thrives in disturbed soils and can tolerate a wide range of conditions. Its success across such diverse climates – from arctic Alaska to subtropical Florida – demonstrates its remarkable flexibility. The small yellow flowers appear in clusters and may attract some pollinators, though they’re not particularly showy.

The Bottom Line for Gardeners

Common dogmustard represents an interesting case study in plant adaptation and spread. While it’s not necessarily harmful, it’s also not the best choice for intentional cultivation. Instead of planting this non-native species, consider supporting your local ecosystem by choosing indigenous alternatives that provide better wildlife habitat and maintain regional biodiversity.

Remember, every plant choice in our gardens is a vote for the kind of landscape we want to see. When possible, casting that vote for native species helps create stronger, more resilient ecosystems right in our own backyards.

Erucastrum gallicum is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Erucastrum gallicum is also known as:

Brassica erucastrum | USDA symbol: BRER5

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Dilleniidae
Order: Capparales
Family: Brassicaceae Burnett - Mustard family
Genus: Erucastrum C. Presl - dogmustard

Species: Erucastrum gallicum (Willd.) O.E. Schulz - common dogmustard

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