North America Non-native Plant

German-madwort

Botanical name: Asperugo

USDA symbol: ASPER

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Alaska âš˜ Non-native, reproduces and persists in the wild in Canada âš˜ Non-native, reproduces and persists in the wild in Greenland âš˜ Non-native, reproduces and persists in the wild in the lower 48 states  

German-Madwort: A Humble European Annual You Probably Don’t Want in Your Garden Meet German-madwort (Asperugo), a small annual herb that’s about as unassuming as plants get. While its common name might sound intriguing, this European native is more likely to show up uninvited in your garden than to win any ...

German-Madwort: A Humble European Annual You Probably Don’t Want in Your Garden

Meet German-madwort (Asperugo), a small annual herb that’s about as unassuming as plants get. While its common name might sound intriguing, this European native is more likely to show up uninvited in your garden than to win any beauty contests. Let’s explore what makes this little plant tick and why you might want to consider native alternatives instead.

What Exactly is German-Madwort?

German-madwort is a non-native annual that originally hails from Europe and western Asia. This modest member of the borage family has made itself at home across North America, from Alaska down to the lower 48 states and throughout much of Canada. It’s the kind of plant that quietly establishes itself in disturbed areas, waste places, and along roadsides without much fanfare.

Where You’ll Find German-Madwort

This adaptable annual has spread across an impressive range of North American locations. You can find German-madwort growing in states and provinces including Alberta, British Columbia, Alaska, Manitoba, California, Ontario, Colorado, Connecticut, Delaware, District of Columbia, Yukon, Idaho, Illinois, Kansas, Maryland, Massachusetts, Minnesota, Montana, Nebraska, Nevada, New Jersey, New York, North Dakota, Ohio, Oregon, Pennsylvania, South Dakota, Utah, Virginia, Washington, and Wyoming.

The Honest Truth About Its Garden Appeal

Let’s be frank: German-madwort isn’t winning any awards for curb appeal. This small, inconspicuous herb produces tiny blue flowers that are easily overlooked. While some gardeners appreciate plants for their subtle beauty, German-madwort falls more into the weedy category than the wildly wonderful one.

Growing Conditions and Care

If German-madwort does appear in your garden (and it might, without an invitation), here’s what you should know about its preferences:

  • Hardiness: Thrives in USDA zones 3-9
  • Soil: Prefers disturbed soils and isn’t particularly picky
  • Light: Adaptable to various light conditions
  • Water: Drought tolerant once established
  • Propagation: Self-seeds readily (sometimes too readily!)

Should You Plant German-Madwort?

Here’s where we get real: most gardeners probably shouldn’t actively plant German-madwort. While it’s not officially listed as invasive, this non-native annual tends to establish itself quite well on its own, thank you very much. Its weedy nature and lack of ornamental value make it less than ideal for intentional garden plantings.

Better Native Alternatives to Consider

Instead of German-madwort, consider these beautiful native alternatives that offer much more garden value:

  • Wild bergamot (Monarda fistulosa): A stunning native with purple flowers that pollinators absolutely adore
  • Blue-eyed grass (Sisyrinchium angustifolium): Delicate blue flowers on grass-like foliage
  • Wild columbine (Aquilegia canadensis): Gorgeous red and yellow flowers that hummingbirds love
  • Virginia bluebells (Mertensia virginica): Spectacular spring blooms in woodland gardens

The Bottom Line

While German-madwort isn’t necessarily harmful to your garden ecosystem, it’s not particularly helpful either. This unassuming annual is more of a botanical wallflower than a garden star. If you’re looking to create a thriving native garden that supports local wildlife and adds genuine beauty to your landscape, you’ll find much better options among North America’s incredible native plant palette.

Save your garden space for plants that truly deserve it – your local pollinators, birds, and neighbors will thank you for it!

German-madwort

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

Asperugo L. - German-madwort

Species

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