North America Native Plant

Water Snowflake

Botanical name: Nymphoides indica

USDA symbol: NYIN

Life cycle: perennial

Habit: forb

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

Water Snowflake: A Floating Beauty for Your Water Garden If you’ve ever dreamed of having delicate white flowers dancing across the surface of your pond, water snowflake might just be the aquatic plant you’re looking for. With its charming star-shaped blooms and heart-shaped floating leaves, this perennial water plant brings ...

Water Snowflake: A Floating Beauty for Your Water Garden

If you’ve ever dreamed of having delicate white flowers dancing across the surface of your pond, water snowflake might just be the aquatic plant you’re looking for. With its charming star-shaped blooms and heart-shaped floating leaves, this perennial water plant brings a touch of elegance to any water feature.

What Is Water Snowflake?

Water snowflake (Nymphoides indica) is a perennial aquatic plant that belongs to the forb family – essentially a non-woody plant that lacks significant woody tissue above ground. Think of it as the water garden equivalent of your favorite flowering herbs, but one that’s perfectly adapted to life on the water’s surface.

This floating beauty gets its common name from its small white flowers that bloom with yellow centers, creating a snowflake-like appearance as they dot the water’s surface. The plant produces attractive heart-shaped leaves that float gracefully, creating natural coverage for your pond.

Where Does It Come From?

Here’s something important to know upfront: water snowflake isn’t native to most of the United States. It’s actually a non-native species that has been introduced and now reproduces on its own in the wild. While it is native to Puerto Rico, in the continental U.S., you’ll primarily find it growing in Florida waters.

The Appeal of Water Snowflake

So why might you consider adding water snowflake to your aquatic garden? Here are some compelling reasons:

  • Delicate white flowers with sunny yellow centers create visual interest
  • Heart-shaped floating leaves provide natural pond coverage
  • Attracts pollinators like bees and flies to your water garden
  • Relatively easy to grow in the right conditions
  • Creates a natural, cottage garden feel in water features

Growing Conditions and Care

Water snowflake is what we call an obligate wetland plant – it almost always occurs in wetland conditions and absolutely needs water to thrive. Here’s what you need to know about keeping it happy:

Ideal Conditions:

  • Full sun to partial shade (at least 6 hours of sunlight preferred)
  • Still or slow-moving freshwater
  • Warm water temperatures
  • USDA hardiness zones 9-11 (think subtropical to tropical climates)

Planting Tips:

  • Plant in containers and submerge in your pond or water feature
  • Ensure water temperature stays consistently warm
  • Provide adequate space as the plant can spread via runners
  • Consider placement where it won’t overwhelm other aquatic plants

Things to Consider

Before you rush out to add water snowflake to your pond, here are some important considerations:

Since this is a non-native species, it’s worth thinking about whether it fits with your gardening philosophy. If you’re focused on supporting local ecosystems with native plants, you might want to explore native aquatic alternatives that provide similar beauty while supporting local wildlife.

Additionally, like many aquatic plants, water snowflake can spread relatively quickly under ideal conditions. While this isn’t necessarily problematic in a contained water garden, it’s something to monitor and manage.

Native Alternatives to Consider

If you love the idea of floating flowers but prefer to stick with native species, consider these alternatives:

  • American lotus (Nelumbo lutea) for larger ponds
  • Spatterdock (Nuphar advena) for yellow blooms
  • White water lily species native to your region

The Bottom Line

Water snowflake can be a lovely addition to water gardens in warm climates, offering delicate beauty and pollinator appeal. Just remember to be mindful of its non-native status and consider how it fits into your overall garden ecosystem. Whether you choose this charming floater or opt for a native alternative, the key is creating a water feature that brings you joy while being responsible to your local environment.

If you do decide to grow water snowflake, enjoy watching those sweet little snowflakes bloom across your pond’s surface – it’s quite a sight to behold!

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

Water Snowflake

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 indica (L.) Kuntze - water snowflake

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