Non-native Plants

James’ Waterlily

Nymphaea jamesoniana

USDA symbol: NYJA

perennial forb

Lower 48 states: non-native, naturalized
Puerto Rico: non-native, naturalized

If you’ve been dreaming of adding some aquatic elegance to your garden pond, James’ waterlily (Nymphaea jamesoniana) might just catch your eye. This non-native perennial brings a touch of tropical charm to water features across Florida and Puerto Rico, where it has successfully established itself in the wild. James’ waterlily ...

James’ Waterlily: A Tropical Beauty for Your Water Garden

If you’ve been dreaming of adding some aquatic elegance to your garden pond, James’ waterlily (Nymphaea jamesoniana) might just catch your eye. This non-native perennial brings a touch of tropical charm to water features across Florida and Puerto Rico, where it has successfully established itself in the wild.

What is James’ Waterlily?

James’ waterlily is a perennial aquatic forb – essentially an herbaceous plant that lacks woody stems and thrives in water. Originally hailing from South America, this waterlily has made itself at home in warmer parts of the United States. You might also see it listed under its botanical synonyms Castalia jamesoniana or the illegitimate name Nymphaea blanda.

Where Does It Grow?

Currently, you’ll find James’ waterlily flourishing in Florida and Puerto Rico, where it has become a naturalized resident. As a non-native species, it reproduces on its own in the wild and tends to stick around once established.

  • Species observed
  • No observations

The Appeal of James’ Waterlily

What makes this waterlily special? Here’s what draws gardeners to this aquatic beauty:

  • Fragrant white to pale pink flowers that open during daylight hours
  • Classic round, floating leaves that create that quintessential pond aesthetic
  • Reliable blooming throughout the warm season
  • Attracts bees, flies, and other pollinators to your water feature

Growing Conditions and Care

James’ waterlily is definitely a plant with specific needs – it’s classified as an Obligate Wetland species, meaning it almost always requires wetland conditions to thrive. Here’s what you need to know:

Ideal Growing Conditions

  • Water requirements: Still or slow-moving freshwater bodies
  • Light: Full sun to partial shade
  • Climate zones: USDA zones 9-11 (warm, subtropical to tropical areas)
  • Planting depth: Submerged 1-2 feet below water surface

Planting and Maintenance Tips

Successfully growing James’ waterlily requires attention to its aquatic nature:

  • Plant in containers filled with nutrient-rich aquatic soil
  • Position containers so the growing point sits 12-24 inches below water surface
  • Fertilize regularly during the growing season with aquatic plant fertilizer
  • Remove spent flowers and yellowing leaves to maintain plant health
  • Provide protection from strong currents or wave action

Should You Plant James’ Waterlily?

While James’ waterlily isn’t listed as invasive or noxious, it is a non-native species that has naturalized in some areas. If you’re looking to create a stunning water garden, it can certainly deliver the classic waterlily look you’re after. However, if you prefer supporting native ecosystems, consider these native alternatives:

  • American white waterlily (Nymphaea odorata)
  • Banana waterlily (Nymphaea mexicana) – native to southern regions
  • Various native Nymphaea species appropriate to your specific region

Perfect for Water Gardens

James’ waterlily shines in formal water gardens, ornamental ponds, and aquatic landscape features. It’s particularly well-suited for:

  • Tropical and subtropical garden designs
  • Ornamental ponds and water features
  • Large container water gardens
  • Natural-style pond edges and margins

The Bottom Line

James’ waterlily offers reliable beauty for warm-climate water gardens, with its fragrant blooms and classic floating foliage. While it’s not native to the United States, it’s not considered problematic either. Whether you choose this tropical beauty or opt for native alternatives, adding any waterlily to your pond will create a stunning focal point that both you and local pollinators will appreciate. Just remember – this is definitely a plant that needs its feet wet (or completely submerged) to be happy!

Nymphaea jamesoniana 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. Nymphaea jamesoniana is also known as:

Castalia jamesoniana Britton & | USDA symbol: CAJA8
Nymphaea blanda , nom. illeg. | USDA symbol: NYBL

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.

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 care and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection can be if you don't have the right information. While tags on nursery plants 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. You might be surprised to learn that popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. The table below gives insight into the preferred growing conditions of this plant throughout its geographical distribution.

Region
Preferred Habitat

Atlantic and Gulf Coastal Plain (AL, AR, DC, DE, FL, GA, IL, KY, LA, MD, MS, MO, NC, NJ, OK, PA, SC, TN, TX, VA)

Obligate Wetland

Caribbean (PR, VI)

Obligate Wetland
Wetland Glossary
Obligate Wetland
Facultative Wetland
Facultative
Facultative Upland
Obligate Upland
Almost always occurs in wetlands
Usually occurs in wetlands but may occur in non-wetlands
Can occur in wetlands and non-wetlands
Usually occurs in non-wetlands but may occur in wetlands
Almost never occurs in wetlands

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Magnoliidae
Order: Nymphaeales
Family: Nymphaeaceae Salisb. - Water-lily family
Genus: Nymphaea L. - waterlily

Species: Nymphaea jamesoniana Planch. - James' waterlily

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