Native Plants

Dock

Rumex lapponicus

USDA symbol: RULA9

perennial forb

Alaska: native
Canada: native
Greenland: native

If you’re fascinated by plants that thrive in some of Earth’s most challenging climates, meet Lapland dock (Rumex lapponicus) – a hardy perennial that calls the Arctic home. This unassuming member of the buckwheat family might not win any beauty contests, but it’s a fascinating example of nature’s ability to ...

Lapland Dock: An Arctic Native for Specialized Gardens

If you’re fascinated by plants that thrive in some of Earth’s most challenging climates, meet Lapland dock (Rumex lapponicus) – a hardy perennial that calls the Arctic home. This unassuming member of the buckwheat family might not win any beauty contests, but it’s a fascinating example of nature’s ability to adapt to extreme conditions.

What is Lapland Dock?

Lapland dock is a perennial forb, meaning it’s an herbaceous plant that lacks woody stems but returns year after year. As a member of the Rumex genus, it’s related to more familiar dock species, though this particular variety has evolved to handle the harsh realities of Arctic life. You might also see it listed under several botanical synonyms, including Acetosa lapponica and various subspecies classifications of Rumex acetosa.

Where Does It Come From?

This cold-weather specialist is native to the northernmost regions of North America, including Alaska, northern Canada (Alberta, British Columbia, Yukon, and Northwest Territories), and Greenland. It’s perfectly at home in landscapes where most plants would simply give up and call it quits.

  • Species observed
  • No observations

Should You Grow Lapland Dock?

Here’s where things get interesting – and a bit challenging. Lapland dock is definitely not your typical garden center find, and there are some important considerations before you decide to grow it:

The Reality Check

This plant is extremely cold-hardy (think USDA zones 1-4) but struggles in warmer climates. If you live anywhere with hot summers or mild winters, Lapland dock probably isn’t going to thrive in your garden. It’s genuinely adapted for Arctic conditions and doesn’t compromise on its temperature preferences.

Limited Aesthetic Appeal

Let’s be honest – Lapland dock isn’t going to be the star of your flower border. It’s a modest plant with small, often reddish-tinged leaves that form low-growing clumps. Its flowers are tiny and not particularly showy. This is a plant you’d choose for its unique origins and hardiness rather than its beauty.

Specialized Growing Conditions

Lapland dock has very specific needs:

  • Extremely cold winter temperatures
  • Cool, short growing seasons
  • Well-draining soil that doesn’t stay waterlogged
  • Full sun to partial shade
  • Moist conditions during the growing season

Wetland Preferences

Interestingly, this plant’s relationship with wet conditions varies by region. In Alaska, it’s considered an upland species that rarely grows in wetlands. However, in other parts of its range, it can tolerate both wet and dry conditions. This flexibility likely helps it survive in the unpredictable Arctic environment.

Wildlife and Pollinator Value

While specific information about Lapland dock’s wildlife benefits is limited, most dock species provide some value to wildlife through their seeds and occasional use as browse. However, don’t expect it to be a pollinator magnet – the small, inconspicuous flowers aren’t designed to attract lots of insects.

Best Garden Applications

If you’re determined to grow Lapland dock, here are the most suitable scenarios:

  • Alpine gardens: Perfect for specialized cold-climate plant collections
  • Rock gardens: Can work in cool, well-draining rockery settings
  • Native plant gardens: Ideal if you live in its natural range and want authentic local flora
  • Educational gardens: Great for demonstrating Arctic plant adaptations

Growing Tips

If you’re in the right climate zone and want to try growing Lapland dock:

  • Start with seeds if you can find them, as plants are rarely available commercially
  • Plant in spring after the last hard frost
  • Choose a location with morning sun and afternoon shade in warmer parts of its range
  • Ensure good drainage – Arctic plants often struggle with waterlogged roots
  • Don’t expect rapid growth; this is a slow-developing plant
  • Mulch lightly to conserve moisture but avoid heavy mulching that might retain too much heat

The Bottom Line

Lapland dock is a plant for very specific situations and gardeners. If you live in the far north, have a passion for native plants, or are creating a specialized alpine garden, it could be an interesting addition. However, for most gardeners in temperate climates, there are many other native plants that would be easier to grow and more rewarding.

Consider this plant a botanical curiosity rather than a garden staple – fascinating for what it represents about plant adaptation, but probably not the best choice for your everyday landscape needs.

Rumex lapponicus 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. Rumex lapponicus is also known as:

Acetosa alpestris Á. Löve ssp. lapponica Á. Löve | USDA symbol: ACALL
Acetosa lapponica | USDA symbol: ACLA13
Rumex acetosa ssp. lapponicus | USDA symbol: RUACL2
Rumex alpestris ssp. lapponicus | USDA symbol: RUALL

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.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" — matching plants to their ideal growing conditions, so they'll thrive with less care and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection can be if you don't have the right information. While tags on nursery plants list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. You might be surprised to learn that popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. The table below gives insight into the preferred growing conditions of this plant throughout its geographical distribution.

Region
Preferred Habitat

Alaska ()

Obligate Upland

Arid West (AZ, CA, CO, ID, MT, NV, NM, OR, TX, UT, WA, WY)

Facultative

Great Plains (CO, KS, MN, MT, NE, NM, ND, OK, SD, TX, WY)

Facultative

Western Mountains, Valleys, and Coast (AZ, CA, CO, ID, MT, NV, NM, OR, SD, UT, WA, WY)

Obligate Upland
Wetland Glossary
Obligate Wetland
Facultative Wetland
Facultative
Facultative Upland
Obligate Upland
Almost always occurs in wetlands
Usually occurs in wetlands but may occur in non-wetlands
Can occur in wetlands and non-wetlands
Usually occurs in non-wetlands but may occur in wetlands
Almost never occurs in wetlands

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Caryophyllidae
Order: Polygonales
Family: Polygonaceae Juss. - Buckwheat family
Genus: Rumex L. - dock

Species: Rumex lapponicus (Hiitonen) Czern. - dock

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