North America Native Plant

Hybrid Floatingheart

Botanical name: Nymphoides aquatica × cordata

USDA symbol: NYAQ3

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Hybrid Floatingheart: A Rare Native Aquatic Gem If you’re an aquatic gardening enthusiast always on the hunt for something truly unique, you might have stumbled across the mysterious hybrid floatingheart (Nymphoides aquatica × cordata). This perennial aquatic plant represents a fascinating intersection in the floatingheart family, though finding detailed growing ...

Hybrid Floatingheart: A Rare Native Aquatic Gem

If you’re an aquatic gardening enthusiast always on the hunt for something truly unique, you might have stumbled across the mysterious hybrid floatingheart (Nymphoides aquatica × cordata). This perennial aquatic plant represents a fascinating intersection in the floatingheart family, though finding detailed growing information can feel like searching for a needle in a haystack!

What Makes This Plant Special?

The hybrid floatingheart is exactly what its name suggests—a natural cross between two native floatingheart species. As a native plant to the lower 48 states, it carries the genetic legacy of America’s aquatic flora, making it a true botanical treasure for those lucky enough to encounter it.

This perennial forb lacks the woody tissue you’d find in shrubs or trees, instead maintaining its herbaceous nature throughout its growing seasons. Like other members of the floatingheart family, it’s adapted for life in aquatic environments, though specific details about its appearance and growth habits remain elusive in horticultural literature.

Where Does It Call Home?

Currently documented in Georgia and South Carolina, this hybrid represents a small slice of the southeastern United States’ rich aquatic plant diversity. Its limited geographic range suggests it may be quite rare or simply under-documented in botanical surveys.

Should You Try Growing Hybrid Floatingheart?

Here’s where things get tricky. While this native hybrid isn’t invasive or problematic, the lack of readily available information about its cultivation presents some challenges:

  • Extremely limited availability in the nursery trade
  • Unknown specific growing requirements
  • Unclear propagation methods
  • Uncertain hardiness zones

The Reality Check for Gardeners

If you’re dreaming of adding this rare hybrid to your water garden, you might want to consider some alternatives. Since detailed growing information is scarce, you could explore other native floatingheart species that are better documented and more readily available. These alternatives would give you similar aesthetic appeal with much clearer care instructions.

For aquatic gardening success, look for native water plants with established cultivation guidelines. Your local native plant society or aquatic gardening groups might have suggestions for beautiful native alternatives that will thrive in your specific region.

The Bottom Line

The hybrid floatingheart represents the fascinating complexity of native plant genetics, but it’s more of a botanical curiosity than a practical garden choice for most water gardeners. If you do happen to encounter this rare hybrid through specialized native plant sources, treat it as the treasure it is—but don’t feel disappointed if your search comes up empty. The world of native aquatic plants offers plenty of other stunning options that are much easier to grow and enjoy!

Sometimes the most interesting plants are the ones that remind us there’s still so much to discover in our native flora, even if we can’t always bring them home to our gardens.

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

Solanales

Family

Menyanthaceae Dumort. - Buckbean family

Genus

Nymphoides Hill - floatingheart

Species

Nymphoides aquatica × cordata [unnamed hybrid] - hybrid floatingheart

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