Native Plants

Threadleaf Crowfoot

Ranunculus trichophyllus var. trichophyllus

USDA symbol: RATRT

perennial forb

Alaska: native
Canada: native
Greenland: native
Lower 48 states: native

If you’ve been dreaming of adding a graceful native aquatic plant to your pond or water garden, threadleaf crowfoot (Ranunculus trichophyllus var. trichophyllus) might just be the perfect choice. This charming perennial brings a touch of wild elegance to any water feature with its feathery underwater foliage and dainty white ...

Threadleaf Crowfoot may be listed as rare in your area.
New Jersey

Status: Highlands Listed, S2 | Imperiled: Extremely rare. Typically 6 to 20 occurrences or 1,000 to 3,000 remaining individuals.

Threadleaf Crowfoot: A Delicate Native Aquatic for Water Gardens

If you’ve been dreaming of adding a graceful native aquatic plant to your pond or water garden, threadleaf crowfoot (Ranunculus trichophyllus var. trichophyllus) might just be the perfect choice. This charming perennial brings a touch of wild elegance to any water feature with its feathery underwater foliage and dainty white blooms that dance on the water’s surface.

What Makes Threadleaf Crowfoot Special

Threadleaf crowfoot is a native North American aquatic plant that’s as beautiful as it is beneficial. As a herbaceous perennial forb, it lacks woody stems but makes up for it with incredibly fine, thread-like underwater leaves that create an almost ethereal underwater garden. When it blooms, small white flowers emerge above the water surface, creating a lovely contrast against the submerged greenery.

Where This Native Beauty Calls Home

This widespread native has an impressive range across North America. You’ll find threadleaf crowfoot naturally growing from Alaska and Canada (including Alberta, British Columbia, Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec, Saskatchewan, Yukon, Northwest Territories, Labrador, and Newfoundland) down through most of the lower 48 states including Arizona, California, Colorado, Connecticut, Idaho, Illinois, Indiana, Iowa, Kansas, Maine, Maryland, Massachusetts, Minnesota, Montana, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Dakota, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, and Wyoming.

  • Species observed
  • No observations

A Word About Rarity

Before you get too excited about planting threadleaf crowfoot, there’s something important to know. In New Jersey, this species has a rarity status of S2 and is Highlands Listed, meaning it’s considered rare in that state. If you’re gardening in New Jersey or other areas where it might be uncommon, please ensure you source this plant responsibly from reputable native plant nurseries rather than collecting from the wild.

Perfect for Water Gardens and Natural Landscapes

Threadleaf crowfoot thrives in USDA hardiness zones 2-8, making it suitable for most temperate North American gardens. It’s particularly well-suited for:

  • Water gardens and ornamental ponds
  • Bog gardens and rain gardens
  • Natural pond edges and shorelines
  • Native plant landscapes with water features

The plant’s delicate appearance adds texture and movement to water features while providing habitat for aquatic wildlife. Its small white flowers also attract various pollinators, including flies and small bees, making it a valuable addition to pollinator-friendly gardens.

Growing Threadleaf Crowfoot Successfully

The key to success with threadleaf crowfoot is recreating its preferred aquatic conditions:

  • Water requirements: Needs shallow freshwater, either still or slow-moving
  • Light: Prefers full to partial sun
  • Planting: Can be planted directly in shallow water or in containers submerged in ponds
  • Soil: When grown at pond edges, prefers consistently saturated soil

Low-Maintenance Water Gardening

Once established, threadleaf crowfoot is refreshingly low-maintenance. As a native plant, it’s naturally adapted to local conditions and rarely needs intervention. Simply ensure it has access to clean water and adequate light, and it will reward you with its graceful presence season after season.

Is Threadleaf Crowfoot Right for Your Garden?

Consider adding threadleaf crowfoot to your garden if you:

  • Have a pond, water garden, or bog garden
  • Want to support native plant conservation
  • Appreciate delicate, naturalistic beauty over bold garden statements
  • Enjoy low-maintenance aquatic plants
  • Want to provide habitat for aquatic wildlife and pollinators

Remember, if you’re in an area where this plant is considered rare, always source it responsibly and consider it a special addition to your conservation-minded garden. With its widespread native range and gentle beauty, threadleaf crowfoot offers water gardeners a chance to grow something truly special while supporting North American biodiversity.

Ranunculus trichophyllus var. trichophyllus 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. Ranunculus trichophyllus var. trichophyllus is also known as:

Batrachium flaccidum | USDA symbol: BAFL2
Batrachium porteri | USDA symbol: BAPO3
Batrachium trichophyllum | USDA symbol: BATR2
Ranunculus aquatilis var. capillaceus DC. | USDA symbol: RAAQC2
Ranunculus aquatilis var. calvescens | USDA symbol: RAAQC3
Ranunculus aquatilis var. harrisii | USDA symbol: RAAQH2
Ranunculus aquatilis var. lalondei | USDA symbol: RAAQL3
Ranunculus aquatilis var. porteri | USDA symbol: RAAQP2
Ranunculus aquatilis var. trichophyllus | USDA symbol: RAAQT2
Ranunculus flaccidus | USDA symbol: RAFL3

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: Magnoliidae
Order: Ranunculales
Family: Ranunculaceae Juss. - Buttercup family
Genus: Ranunculus L. - buttercup

Species: Ranunculus trichophyllus Chaix - threadleaf crowfoot

Variety: Ranunculus trichophyllus Chaix var. trichophyllus - threadleaf crowfoot

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