North America Native Plant

Small Waterwort

Botanical name: Elatine minima

USDA symbol: ELMI

Life cycle: annual

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states âš˜ Native to St. Pierre and Miquelon  

Small Waterwort: A Tiny Native Gem for Your Wetland Garden If you’re looking to create an authentic wetland habitat in your backyard, you might want to get acquainted with small waterwort (Elatine minima). This diminutive native annual might not win any beauty contests, but it plays an important ecological role ...

Rare plant alert!

Region: New Jersey

Status: Highlands Listed, S3: New Jersey Highlands region ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Small Waterwort: A Tiny Native Gem for Your Wetland Garden

If you’re looking to create an authentic wetland habitat in your backyard, you might want to get acquainted with small waterwort (Elatine minima). This diminutive native annual might not win any beauty contests, but it plays an important ecological role in North America’s aquatic ecosystems. Let’s dive into what makes this little plant special and whether it deserves a spot in your garden.

What is Small Waterwort?

Small waterwort is exactly what its name suggests – a very small plant that loves water. As an annual forb, it completes its entire life cycle in just one growing season. Don’t expect towering stems or showy blooms here; this plant is all about function over form. It’s a humble member of the plant kingdom that prefers to do its work quietly along pond edges and in muddy wetland areas.

Where You’ll Find This Native Treasure

Small waterwort is a true North American native, naturally occurring across a surprisingly wide range. You can find it growing wild from the Maritime provinces of Canada down through much of the eastern United States. Its native range includes New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec, Labrador, and Newfoundland in Canada, plus states like Connecticut, Delaware, Illinois, Maine, Maryland, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, Vermont, Virginia, and Wisconsin.

A Word of Caution: Rarity Matters

Before you start planning your small waterwort garden, there’s something important to know. In New Jersey, this little plant has earned a Highlands Listed, S3 rarity status, meaning it’s considered uncommon and potentially vulnerable. If you’re lucky enough to find this plant for your garden, make sure you’re sourcing it responsibly from reputable native plant nurseries – never collect it from the wild.

Why Consider Small Waterwort for Your Garden?

Let’s be honest – you’re not planting small waterwort for its stunning visual impact. This plant is for the gardener who values ecological authenticity over Instagram-worthy blooms. Here’s why it might earn a place in your landscape:

  • It’s a true native species that supports local ecosystem health
  • Perfect for wetland restoration projects and naturalistic pond edges
  • Helps create authentic habitat for other wetland species
  • Requires no maintenance once established in proper conditions
  • Adds botanical diversity to specialized water gardens

The Perfect Garden Match

Small waterwort isn’t destined for your typical flower border. This specialized plant thrives in very specific garden settings:

  • Rain gardens with consistently moist soil
  • Bog gardens and wetland areas
  • Pond margins and shallow water features
  • Naturalistic water gardens
  • Wetland restoration projects

Growing Conditions: Water is Life

Small waterwort is what botanists call an obligate wetland plant across all regions where it grows. Translation? This plant absolutely, positively needs wet feet to survive. It naturally grows in shallow standing water or on mudflats that stay consistently saturated.

For successful cultivation, you’ll need to provide:

  • Full to partial sun exposure
  • Consistently moist to saturated soil
  • Shallow standing water (just a few inches deep)
  • Muddy or sandy substrate
  • Protection from drying out

Small waterwort is hardy across USDA zones 3-8, making it suitable for most temperate gardens within its native range.

Planting and Care Tips

Here’s where things get interesting – and challenging. Small waterwort isn’t your typical garden center find, and for good reason. This plant often establishes naturally in appropriate wetland conditions rather than being deliberately planted. If you’re determined to try growing it:

  • Source seeds or plants only from reputable native plant suppliers
  • Create ideal wetland conditions before attempting to establish it
  • Be patient – natural establishment may take time
  • Avoid disturbing the area once the plant is growing
  • Let nature take the lead in this specialized ecosystem

Wildlife and Pollinator Benefits

While small waterwort’s flowers are too tiny to attract most pollinators, the plant contributes to wetland ecosystem health in other ways. It provides habitat structure in aquatic environments and may serve as food for waterfowl and other wetland wildlife, though specific wildlife benefits aren’t well-documented for this species.

The Bottom Line

Small waterwort is definitely a niche plant for specialized gardens. If you’re creating a naturalistic wetland habitat, rain garden, or bog garden, and you can source it responsibly, this little native annual adds authentic ecological value to your landscape. Just remember – success with this plant means creating the right wetland conditions and then stepping back to let nature work its magic.

While it may not be the showstopper in your garden, small waterwort represents the quiet, essential players that make healthy ecosystems function. Sometimes the smallest plants play the most important roles.

Small Waterwort

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Theales

Family

Elatinaceae Dumort. - Waterwort family

Genus

Elatine L. - waterwort

Species

Elatine minima (Nutt.) Fisch. & C.A. Mey. - small waterwort

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