North America Non-native Plant

James’ Waterlily

Botanical name: Nymphaea jamesoniana

USDA symbol: NYJA

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Puerto Rico  

Synonyms: Castalia jamesoniana (Planch.) Britton & P. Wilson (CAJA8)  âš˜  Nymphaea blanda G. Mey., nom. illeg. (NYBL)   

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 ...

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.

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!

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 work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags 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. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Atlantic and Gulf Coastal Plain

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Caribbean

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

James’ Waterlily

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
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