North America Native Plant

Rough Bugleweed

Botanical name: Lycopus asper

USDA symbol: LYAS

Life cycle: perennial

Habit: forb

Native status: Native to Alaska âš˜ Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Lycopus lucidus auct. non Turcz. ex Benth. p.p. (LYLU2)  âš˜  Lycopus lucidus Turcz. ex Benth. ssp. americanus (A. Gray) Hultén (LYLUA)  âš˜  Lycopus lucidus Turcz. ex Benth. var. americanus A. Gray (LYLUA2)   

Rough Bugleweed: A Native Wetland Wonder for Water-Loving Gardeners If you’re looking to add some native charm to your wetland garden or boggy backyard spot, rough bugleweed might just be your new best friend. This unassuming but hardy perennial has been quietly thriving across North America for ages, and it’s ...

Rough Bugleweed: A Native Wetland Wonder for Water-Loving Gardeners

If you’re looking to add some native charm to your wetland garden or boggy backyard spot, rough bugleweed might just be your new best friend. This unassuming but hardy perennial has been quietly thriving across North America for ages, and it’s ready to bring its low-key magic to your landscape.

Meet the Rough Bugleweed

Rough bugleweed (Lycopus asper) is a native North American perennial that belongs to the mint family, though don’t expect it to spice up your mojitos. This herbaceous plant is what botanists call a forb – basically a non-woody plant that dies back to the ground each winter and pops back up when conditions are right.

You might also see this plant listed under some tongue-twisting scientific synonyms like Lycopus lucidus var. americanus, but let’s stick with the simpler rough bugleweed, shall we?

Where Does Rough Bugleweed Call Home?

This adaptable native has quite the impressive range! Rough bugleweed naturally occurs throughout Alaska, Canada, and most of the lower 48 states. You’ll find it flourishing from the prairies of Alberta and Saskatchewan down to the desert wetlands of Arizona and New Mexico, and from the Pacific Coast to the Great Lakes region.

Why Your Garden Might Love Rough Bugleweed

Here’s where rough bugleweed really shines – it’s an obligate wetland plant, which means it absolutely loves wet feet. If you have a perpetually soggy spot in your yard that makes you groan every time you see it, rough bugleweed might just turn that problem area into a feature.

This plant typically reaches about 2 feet tall with a moderate growth rate, making it perfect for:

  • Rain gardens and bioswales
  • Pond edges and stream banks
  • Low-lying wet areas that stay consistently moist
  • Native wetland restoration projects

What to Expect from Rough Bugleweed

Let’s be honest – rough bugleweed isn’t going to win any beauty contests. It has coarse-textured green foliage and produces small, inconspicuous flowers in mid-summer. The plant has an upright, single-crown growth form and isn’t particularly showy in fall. But sometimes the best garden players are the quiet, dependable ones that do their job without making a fuss.

The plant blooms during summer and produces seeds that ripen from summer through fall, though don’t expect a spectacular floral display. Think of it more as a reliable supporting actor than a leading lady.

Growing Conditions: The Wet and Wonderful

Rough bugleweed is refreshingly straightforward about what it wants: water, and lots of it. Here are the key growing requirements:

  • Moisture: High water needs – this plant thrives in consistently wet to saturated soils
  • Soil: Adaptable to coarse, medium, or fine-textured soils
  • pH: Prefers slightly acidic to neutral conditions (pH 6.0-8.0)
  • Sun exposure: Shade tolerant, making it great for those tricky wet, shady spots
  • Hardiness: Extremely cold hardy (survives temperatures down to -38°F)
  • Precipitation: Thrives in areas receiving 10-36 inches of annual rainfall

Planting and Care Tips

Growing rough bugleweed is pretty straightforward, especially if you have the right conditions:

  • Propagation: Can be grown from seed or divided from tubers. Seeds are tiny (about 908,000 per pound!)
  • Planting density: Space plants to achieve 2,700-10,000 plants per acre, depending on your goals
  • Establishment: Seeds have medium vigor and moderate spread rate
  • Maintenance: Very low maintenance once established – just keep it wet!
  • Frost tolerance: Needs at least 120 frost-free days

One thing to note: commercial sources for rough bugleweed can be hard to find, so you might need to do some hunting or consider growing from wild-collected seed (where legally permitted).

The Bottom Line

Rough bugleweed might not be the showiest plant in the garden center, but it’s a champion for challenging wet sites where many other plants would throw in the towel. If you’re working on a wetland restoration project, dealing with chronically wet soil, or simply want to support native plant communities, rough bugleweed deserves a spot on your consideration list.

This is definitely a plant for the gardener who values function over flash and appreciates the quiet beauty of native ecosystems. While we don’t have specific information about its wildlife benefits, most native wetland plants support local ecosystems in important ways, from providing cover for small creatures to contributing to the complex web of wetland life.

So next time you’re staring at that perpetually soggy corner of your property, consider giving rough bugleweed a try. It might not be rough on the eyes, but it’s certainly tough where it counts!

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 work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags 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. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Alaska

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Arid West

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Great Plains

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Midwest

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Northcentral & Northeast

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Western Mountains, Valleys, and Coast

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Rough Bugleweed

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

Lamiaceae Martinov - Mint family

Genus

Lycopus L. - waterhorehound

Species

Lycopus asper Greene - rough bugleweed

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