North America Native Plant

Guadalupe Waternymph

Botanical name: Najas guadalupensis olivacea

USDA symbol: NAGUO2

Life cycle: annual

Habit: forb

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

Synonyms: Najas guadalupensis (Spreng.) Magnus var. olivacea (Rosend. & Butters) Haynes (NAGUO)  âš˜  Najas olivacea Rosend. & Butters (NAOL)   

Guadalupe Waternymph: A Native Aquatic Gem for Your Water Garden If you’re looking to add some authentic native charm to your pond or water garden, let me introduce you to a delightfully understated aquatic plant: the Guadalupe waternymph (Najas guadalupensis olivacea). This humble annual might not win any beauty contests, ...

Guadalupe Waternymph: A Native Aquatic Gem for Your Water Garden

If you’re looking to add some authentic native charm to your pond or water garden, let me introduce you to a delightfully understated aquatic plant: the Guadalupe waternymph (Najas guadalupensis olivacea). This humble annual might not win any beauty contests, but it’s got some serious ecological street cred that makes it worth considering for the right water feature.

What Exactly Is Guadalupe Waternymph?

Don’t let the romantic name fool you – this isn’t the kind of plant that’ll have your neighbors stopping to admire your garden. Guadalupe waternymph is a fully submerged aquatic annual that belongs to the forb family. Think of it as the quiet, hardworking member of your aquatic plant community. It’s a true native to both Canada and the lower 48 states, which means it’s perfectly adapted to North American waters.

As an annual, this plant completes its entire life cycle in one growing season, making it a bit different from the perennial water lilies and cattails you might be more familiar with.

Where Does It Call Home?

This native beauty has quite the range across northern regions. You’ll find Guadalupe waternymph naturally growing in Manitoba, Ontario, Connecticut, Quebec, Illinois, Indiana, Iowa, Massachusetts, Michigan, Minnesota, New York, and Wisconsin. It’s particularly well-suited to the Great Lakes region and northeastern waters.

Should You Plant Guadalupe Waternymph?

Here’s the honest truth: this plant is more about function than form. If you’re creating a natural pond ecosystem or working on aquatic habitat restoration, Guadalupe waternymph could be a fantastic addition. It thrives in USDA hardiness zones 3-7, making it quite cold-tolerant.

Consider it if you:

  • Have a natural-style pond or water garden
  • Want to support native aquatic ecosystems
  • Are working on habitat restoration projects
  • Prefer low-maintenance aquatic plants
  • Live in the northern United States or southern Canada

Skip it if you:

  • Want showy, ornamental water plants
  • Have a formal water feature design
  • Live outside its natural hardiness range
  • Prefer perennial aquatic plants

Growing Guadalupe Waternymph Successfully

The good news? This native is pretty easygoing once you understand its basic needs. As a fully submerged aquatic plant, it must live completely underwater – no exceptions. Think of it as the opposite of those plants that just dip their toes in the water.

Perfect Growing Conditions

Guadalupe waternymph prefers shallow to moderately deep freshwater. It’s not picky about water chemistry, but it does need clean, relatively still water to thrive. Since it’s naturally found in northern regions, it actually prefers cooler water temperatures.

Planting and Care Tips

Here’s where things get refreshingly simple:

  • Planting: Simply anchor the plant to the bottom of your pond or allow it to float freely – it can adapt to either lifestyle
  • Depth: Works well in water depths from 1 to 6 feet
  • Maintenance: Virtually none required once established
  • Winter care: As an annual, it will naturally die back, but seeds will overwinter for next year’s growth

The Bigger Picture

While Guadalupe waternymph might not be the star of your water garden show, it plays an important supporting role in aquatic ecosystems. As a native plant, it provides habitat and food sources that local wildlife have evolved alongside for thousands of years.

This unassuming little plant represents something special: authenticity. In a world full of flashy exotic water plants, sometimes the most meaningful choice is the quiet native that’s been calling your local waters home long before any of us arrived on the scene.

If you’re ready to embrace the subtle beauty of truly native aquatic gardening, Guadalupe waternymph might just be the perfect addition to your water feature. Just remember – with great native plant power comes the responsibility to source your plants ethically and help preserve these important aquatic ecosystems for future generations.

Guadalupe Waternymph

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Alismatidae

Order

Najadales

Family

Najadaceae Juss. - Water-nymph family

Genus

Najas L. - waternymph

Species

Najas guadalupensis (Spreng.) Magnus - southern waternymph

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