North America Native Plant

Biennial Cinquefoil

Botanical name: Potentilla biennis

USDA symbol: POBI7

Life cycle: annual

Habit: forb

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

Biennial Cinquefoil: A Hardy Native Wildflower for Wet Spots If you’ve been scratching your head trying to figure out what to plant in those perpetually soggy spots in your garden, meet your new best friend: biennial cinquefoil (Potentilla biennis). This unassuming little native wildflower might not win any beauty contests, ...

Biennial Cinquefoil: A Hardy Native Wildflower for Wet Spots

If you’ve been scratching your head trying to figure out what to plant in those perpetually soggy spots in your garden, meet your new best friend: biennial cinquefoil (Potentilla biennis). This unassuming little native wildflower might not win any beauty contests, but it’s got character, resilience, and a knack for thriving where other plants throw in the towel.

What is Biennial Cinquefoil?

Biennial cinquefoil is exactly what its name suggests – a two-year flowering plant that completes its life cycle over two growing seasons. As an annual biennial, it’s a forb (basically a fancy term for a non-woody flowering plant) that grows as a ground-hugging herbaceous plant. Don’t let the scientific classification intimidate you; this is simply a humble wildflower that knows how to make the most of challenging growing conditions.

Where Does It Call Home?

This hardy little plant is a true North American native, calling both Canada and the lower 48 states home. You’ll find biennial cinquefoil naturally growing across a impressive range of western territories, including Alberta, British Columbia, and Yukon in Canada, plus Arizona, California, Colorado, Montana, Nevada, Oregon, South Dakota, Utah, Washington, and Wyoming in the United States.

The Wet Spot Specialist

Here’s where biennial cinquefoil really shines – it’s classified as a facultative wetland plant across multiple regions including the Arid West, Great Plains, and Western Mountains, Valleys, and Coast. This means it usually hangs out in wetlands but can also tolerate drier conditions when needed. Think of it as the plant equivalent of someone who’s equally comfortable in rain boots or hiking boots.

Why Grow Biennial Cinquefoil?

You might be wondering why you’d want this modest wildflower in your garden. Here are some compelling reasons:

  • Problem solver: Perfect for those chronically wet areas where other plants struggle
  • Low maintenance: Once established, it pretty much takes care of itself
  • Native credentials: Supports local ecosystems and wildlife
  • Pollinator magnet: Small yellow flowers attract bees and beneficial insects
  • Natural beauty: Adds delicate texture with its compound leaves and cheerful blooms

Perfect Garden Situations

Biennial cinquefoil works wonderfully in several garden settings:

  • Rain gardens and bioswales
  • Native plant gardens
  • Wetland restoration projects
  • Naturalized landscape areas
  • Wildlife habitat gardens

Growing Conditions and Care

The beauty of biennial cinquefoil lies in its adaptability and low-maintenance nature. Here’s what it needs to thrive:

Soil: Prefers moist to wet soils but can tolerate seasonal flooding. It’s not picky about soil type, making it quite forgiving for beginning gardeners.

Light: Does well in full sun to partial shade, giving you flexibility in placement.

Hardiness: Thrives in USDA zones 3-8, making it suitable for most temperate climates.

Water: Loves consistent moisture but won’t sulk if things get a bit soggy – perfect for those troublesome low spots in your yard.

Planting and Establishment Tips

Getting biennial cinquefoil started in your garden is refreshingly straightforward:

  • Direct seed in fall for best results
  • Seeds need cold stratification, which winter naturally provides
  • Choose locations with reliable moisture
  • Be patient – as a biennial, flowers won’t appear until the second year
  • Once established, it often self-seeds, creating natural colonies

Supporting Pollinators and Wildlife

While biennial cinquefoil might look unassuming, it’s working hard behind the scenes to support local wildlife. Its small yellow flowers provide nectar and pollen for various pollinators, including small bees and flies. The plant’s seeds can also provide food for birds, making it a valuable addition to any wildlife-friendly garden.

The Bottom Line

Biennial cinquefoil might not be the showstopper of your garden, but it’s definitely the reliable friend who shows up when you need them most. If you have wet areas that challenge other plants, or you’re creating a native plant garden that supports local wildlife, this humble wildflower deserves serious consideration. It’s proof that sometimes the most valuable plants are the ones that quietly do their job without asking for much in return.

Give biennial cinquefoil a try – your wet spots (and local pollinators) will thank you for it!

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

Arid West

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Great Plains

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Western Mountains, Valleys, and Coast

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Biennial Cinquefoil

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Rosales

Family

Rosaceae Juss. - Rose family

Genus

Potentilla L. - cinquefoil

Species

Potentilla biennis Greene - biennial cinquefoil

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