North America Non-native Plant

Red Dock

Botanical name: Rumex bucephalophorus

USDA symbol: RUBU3

Life cycle: perennial

Habit: forb

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

Red Dock: A Lesser-Known Non-Native Plant Worth Understanding If you’ve stumbled across the name red dock or Rumex bucephalophorus in your gardening research, you might be wondering what exactly this plant is and whether it deserves a spot in your garden. The truth is, this particular member of the dock ...

Red Dock: A Lesser-Known Non-Native Plant Worth Understanding

If you’ve stumbled across the name red dock or Rumex bucephalophorus in your gardening research, you might be wondering what exactly this plant is and whether it deserves a spot in your garden. The truth is, this particular member of the dock family is something of a botanical mystery – at least when it comes to detailed growing information.

What Exactly Is Red Dock?

Red dock (Rumex bucephalophorus) is a perennial forb, which is just a fancy way of saying it’s a non-woody plant that comes back year after year. Like other members of the dock family, it lacks the thick, woody stems you’d find on shrubs or trees, instead producing softer herbaceous growth that dies back to the ground each winter.

As a forb, red dock fits into that broad category of flowering plants that aren’t grasses, aren’t woody, but are definitely more substantial than your typical garden annual. Think of it as occupying the middle ground in the plant world.

Where Does Red Dock Come From?

Here’s where things get interesting (and a bit concerning for native plant enthusiasts): red dock isn’t actually native to North America. It’s what botanists call a non-native or introduced species that has managed to establish itself and reproduce without human help. In the United States, it’s currently documented only in Louisiana, making it quite geographically limited compared to some of its more widespread dock cousins.

Should You Plant Red Dock in Your Garden?

This is where we need to have an honest conversation. While red dock isn’t currently listed as invasive (at least not that we know of), its non-native status means it’s not contributing to local ecosystems the way native plants would. As a responsible gardener, you might want to consider some alternatives.

If you’re drawn to dock-like plants, consider these native alternatives instead:

  • Wild ginger for shaded areas with interesting foliage
  • Native sedges for wetland or moisture-loving applications
  • Regional wildflowers that provide similar ecological functions

The Information Gap Problem

Here’s the thing about red dock – there’s surprisingly little detailed information available about its specific growing requirements, wildlife benefits, or garden performance. This lack of information is actually pretty telling. Popular garden plants typically have extensive growing guides, while plants that haven’t caught on tend to remain mysterious.

What we do know is limited to the basics: it’s a perennial, it’s established in Louisiana, and it belongs to the dock family. Beyond that, details about ideal growing conditions, hardiness zones, care requirements, and aesthetic qualities remain largely undocumented in readily available gardening resources.

A Better Approach for Your Garden

Instead of gambling on a plant with limited information and questionable ecological value, why not explore the wealth of native alternatives available in your region? Native plants offer several advantages:

  • Well-documented growing requirements
  • Proven benefits for local wildlife and pollinators
  • Better adaptation to local climate conditions
  • Support for regional ecosystems

Contact your local native plant society or extension office to learn about dock-like native plants that might satisfy whatever drew you to red dock in the first place. You’ll likely find options that are better documented, more reliable in your specific climate, and more beneficial for your local environment.

The Bottom Line

Red dock represents an interesting case study in the world of non-native plants – present but not prominent, established but not well-studied. While we can’t definitively say it’s harmful, we also can’t make a strong case for why you’d want to grow it over the many excellent native alternatives available.

In the spirit of responsible gardening, consider this an opportunity to discover something new about your region’s native flora instead. Your local ecosystem (and the wildlife that depends on it) will thank you for the effort.

Red Dock

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Polygonales

Family

Polygonaceae Juss. - Buckwheat family

Genus

Rumex L. - dock

Species

Rumex bucephalophorus L. - red dock

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