North America Non-native Plant

Mediterranean Pepperweed

Botanical name: Lepidium hirtum

USDA symbol: LEHI5

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Mediterranean Pepperweed: An Uncommon Non-Native Worth Skipping If you’ve stumbled across the name Mediterranean pepperweed (Lepidium hirtum) in your gardening research, you might be wondering whether this perennial herb deserves a spot in your landscape. While every plant has its place in the ecosystem, this particular species might not be ...

Mediterranean Pepperweed: An Uncommon Non-Native Worth Skipping

If you’ve stumbled across the name Mediterranean pepperweed (Lepidium hirtum) in your gardening research, you might be wondering whether this perennial herb deserves a spot in your landscape. While every plant has its place in the ecosystem, this particular species might not be the best choice for most home gardeners.

What Is Mediterranean Pepperweed?

Mediterranean pepperweed is a perennial forb—that’s gardening speak for a non-woody herbaceous plant that comes back year after year. Like other members of the mustard family, it’s built for survival rather than show, with the practical, no-nonsense appearance typical of many wild plants.

This species belongs to the Lepidium genus, which includes dozens of pepperweed species found around the world. Most are known more for their edible or medicinal properties than their garden appeal.

Native Status and Distribution

Here’s the important part: Mediterranean pepperweed is not native to North America. It’s an introduced species that has established itself in the wild, currently documented in Maine. As a non-native plant, it doesn’t have the same ecological relationships with local wildlife that our indigenous plants have developed over thousands of years.

Garden Appeal (Or Lack Thereof)

Let’s be honest—Mediterranean pepperweed isn’t going to win any beauty contests. While it may produce small white flowers typical of the mustard family, it lacks the ornamental qualities that most gardeners seek. There’s very little information about its cultivation because, frankly, few people are growing it intentionally.

Growing Conditions and Care

Like many introduced species, Mediterranean pepperweed is likely quite adaptable to various growing conditions. However, detailed cultivation information is scarce, which tells us something important: this isn’t a plant that gardeners are clamoring to grow.

If you’re considering this plant because you’re interested in the pepperweed family, you’d be better served looking into native alternatives that offer similar characteristics while supporting local ecosystems.

Why You Should Consider Native Alternatives Instead

While Mediterranean pepperweed isn’t currently listed as invasive, choosing non-native plants when excellent native alternatives exist isn’t the best use of your garden space. Here’s why native plants are the better choice:

  • They support local pollinators and wildlife with relationships developed over millennia
  • They’re naturally adapted to your local climate and soil conditions
  • They typically require less water and maintenance once established
  • They help preserve the genetic diversity of regional ecosystems

Better Native Options

Instead of Mediterranean pepperweed, consider these native alternatives that offer similar low-key charm with much greater ecological benefits:

  • Wild ginger (Asarum canadense) for shaded areas
  • Wild bergamot (Monarda fistulosa) for sunny spots with pollinator appeal
  • Pennsylvania bittercress (Cardamine pennsylvanica) for a mustard family native
  • Toothwort species (Cardamine species) for early spring interest

The Bottom Line

Mediterranean pepperweed falls into that category of plants that are neither exciting enough to seek out nor problematic enough to actively avoid. It’s simply unremarkable. For gardeners looking to create meaningful, sustainable landscapes, your time and garden space are better invested in native plants that offer beauty, ecological value, and the satisfaction of supporting your local environment.

Remember, every plant choice is a vote for the kind of landscape you want to create. Make yours count by choosing natives that will thrive in your specific location while supporting the web of life around you.

Mediterranean Pepperweed

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

Lepidium L. - pepperweed

Species

Lepidium hirtum (L.) Sm., nom. inq. - Mediterranean pepperweed

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