Native Plants

Remy’s Pepperweed

Lepidium remyi

USDA symbol: LERE10

annual subshrub

Hawaii: native

If you’re drawn to unique native plants with intriguing stories, Remy’s pepperweed (Lepidium remyi) might just capture your imagination. This lesser-known Hawaiian endemic belongs to the mustard family and represents one of those fascinating botanical treasures that calls the islands home. Remy’s pepperweed is what botanists call a forb herb ...

Remy’s Pepperweed may be listed as rare in your area.
Global Conservation Status

Status: S5TH | Secure: At low or no risk of extinction in the area due to an extensive range, abundant populations, and with little to no concern of declines or threats.

Remy’s Pepperweed: A Mysterious Hawaiian Native Worth Knowing

If you’re drawn to unique native plants with intriguing stories, Remy’s pepperweed (Lepidium remyi) might just capture your imagination. This lesser-known Hawaiian endemic belongs to the mustard family and represents one of those fascinating botanical treasures that calls the islands home.

What Makes Remy’s Pepperweed Special?

Remy’s pepperweed is what botanists call a forb herb – essentially a non-woody plant that can be either annual or perennial. Think of it as a humble wildflower relative that has adapted specifically to Hawaiian conditions over thousands of years. Unlike its woody tree and shrub neighbors, this plant keeps things simple with soft, herbaceous growth that emerges from buds at or below ground level.

Where You’ll Find It Growing Wild

This special little plant is found exclusively in Hawaii, making it a true island endemic. It’s one of those plants that evolved in isolation, developing its own unique characteristics that you won’t find anywhere else on Earth.

  • Species observed
  • No observations

The Cultivation Challenge

Here’s where things get interesting – and a bit mysterious. While Remy’s pepperweed is undoubtedly a fascinating native plant, detailed information about growing it in home gardens is surprisingly scarce. This isn’t uncommon with lesser-studied Hawaiian endemics, many of which remain primarily in the realm of botanical research rather than mainstream horticulture.

What We Do Know

Based on the available information, here’s what gardeners should understand about Remy’s pepperweed:

  • Native Status: 100% Hawaiian native – a true island original
  • Growth Form: Herbaceous forb that can be annual or perennial
  • Family Connection: Part of the mustard family, related to familiar garden plants like watercress and arugula
  • Conservation Status: Listed with a somewhat unclear conservation ranking, suggesting more research is needed

Should You Try Growing It?

If you’re gardening in Hawaii and passionate about native plants, Remy’s pepperweed could be an exciting addition to a native plant collection. However, there are a few important considerations:

  • Limited cultivation information means you’d be somewhat pioneering in growing this plant
  • As with any native Hawaiian plant, sourcing should be done responsibly through reputable native plant nurseries
  • Consider it an experimental addition rather than a sure-fire garden staple

Growing Tips (What We Can Infer)

While specific care instructions aren’t readily available, we can make some educated guesses based on its mustard family heritage and Hawaiian origins:

  • Climate: Likely thrives in USDA zones 9-12, given its Hawaiian habitat
  • Soil: Probably prefers well-draining conditions like many island natives
  • Maintenance: As an herbaceous plant, likely requires minimal woody plant care
  • Propagation: Possibly from seed, though specific methods need research

The Bigger Picture

Plants like Remy’s pepperweed remind us that there’s still so much to discover and learn about our native flora. Even in our well-connected world, some plants remain delightfully mysterious, waiting for curious gardeners and researchers to unlock their secrets.

If you’re interested in Hawaiian native plants but want something with more established growing information, consider exploring other endemic mustard family relatives or working with local native plant societies to learn more about cultivation trials.

Sometimes the most rewarding garden adventures come from embracing a little mystery – and Remy’s pepperweed certainly offers that in spades!

Lepidium remyi 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. Lepidium remyi is also known as:

Lepidium bidentatum Morton var. remyi | USDA symbol: LEBIR

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: Lepidium L. - pepperweed

Species: Lepidium remyi Drake - Remy's pepperweed

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