American white waterlily
Plants Active during the day

American white waterlily

Nymphaea odorata

The American white waterlily is the undisputed queen of the pond, featuring brilliant white blossoms and a sweet, intoxicating fragrance. This resilient aquatic perennial provides a floating sanctuary for backyard wildlife, from sun-bathing bullfrogs to industrious pollinators.

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Quick Identification

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Size

Leaves 15-30 cm (6-12 inches) wide; flowers 7-15 cm (3-6 inches) in diameter

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Colors

Brilliant white petals with bright golden-yellow centers; upper leaf surface is deep green while the underside is often reddish or purple

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Key Features

  • Circular floating leaves with a deep V-shaped notch reaching the center
  • Showy white flowers with 25 or more petals and a sweet fragrance
  • Thick, starchy underwater rhizomes often called 'beaver roots'
  • Flowers open in the morning and close by mid-afternoon
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When You’ll See Them

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Activity pattern Active during the day
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Peak hours 7 AM - 2 PM
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Season June-September
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Diet Photosynthetic; produces energy from sunlight while absorbing minerals and nutrients from pond sediment via its root system.
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Habitat Shallow, still, or slow-moving freshwater such as ponds, lakes, marshes, and quiet edges of streams.

public Geographic range

Where Does the American white waterlily Live?

This iconic aquatic plant is native to the vast landscapes of North America, stretching from the cold waters of northern Canada through the United States and into Central America. It has a remarkably wide distribution, naturally occurring as far south as Brazil and Guyana in South America. While it thrives in its native eastern range, it has also been successfully introduced to various western regions where it populates local waterways and ornamental ponds.

Basemap © OpenStreetMap contributors

7 Countries
28.5M km² Range
Least Concern Conservation
US United States CA Canada MX Mexico BR Brazil GY Guyana NI Nicaragua SV El Salvador
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iNaturalist / Verified observation data
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Behavior

The American white waterlily exhibits a fascinating daily rhythm known as nyctinasty. Each flower blossom typically opens as the sun rises, reaching full bloom by mid-morning to attract a variety of pollinators, including bees and beetles. By the early afternoon, the petals fold back up to protect the delicate reproductive organs from nighttime cooling or potential damage, a cycle that repeats for three to four days before the flower head spirals underwater to develop its seeds.

Ecologically, this plant acts as a cornerstone for freshwater habitats. Its expansive floating leaves, or lily pads, create a living canopy on the water's surface that provides essential shade, helping to regulate water temperature and reduce algae growth. These pads also serve as critical landing platforms for insects and hunting grounds for frogs and dragonflies, while the submerged portions of the plant offer nursery space for small fish and invertebrates.

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Camera Tips

Capturing the American white waterlily requires a different strategy than tracking mobile wildlife, as the 'action' is found in the plant's predictable daily blooming cycle. For the best perspective, mount your camera on a pier, a sturdy overhanging branch, or a specialized aquatic stake positioned roughly 2 to 3 feet above the water line. A downward angle of 45 degrees is ideal, as it allows the camera to capture the intricate yellow centers of the flowers while also picking up the beautiful reflections on the water's surface.

To truly document the life of this species, utilize time-lapse settings during the morning hours. Set your camera to take a photo every 5 to 10 minutes between 7:00 AM and 11:00 AM; this will create a stunning sequence of the petals unfurling. If you are using motion-triggered video, try placing the camera near the edge of a lily patch where frogs are known to sit. The movement of a frog leaping onto a pad or a dragonfly landing on a bud will trigger the recording, capturing the waterlily as a functional part of the ecosystem.

Lighting is your biggest challenge when photographing white flowers. The midday sun can easily 'blow out' the white petals, losing all detail in a bright glare. Aim for the 'golden hour' shortly after sunrise for the most textured and warm results. If your camera allows for exposure adjustment, slightly underexposing the shot can help preserve the delicate veins and shadows within the white petals.

Don't forget the environmental maintenance required for aquatic photography. Moisture and humidity are high near the water surface, so ensure your camera housing is well-sealed. Check the lens periodically for water spots or algae splashes, especially after rain, to ensure your shots remain crisp throughout the peak summer blooming season of June through August.

Frequently Asked Questions

The flowers are most active during the morning hours. They typically begin to open at sunrise, are fully open by 9:00 AM, and begin closing by 2:00 PM or 3:00 PM.
You can introduce them to a backyard pond by planting rhizome cuttings in aquatic containers. Submerge the pots 12 to 24 inches deep in a spot that receives at least 6 hours of direct sunlight.
As plants, they produce their own food through photosynthesis. They use their floating leaves to capture sunlight and their root system to absorb nutrients from the underwater soil.
Yes, they are very common in suburban retention ponds, golf course water hazards, and private garden ponds, where they provide cover for local fish and frogs.
The American white waterlily has many-petaled white flowers and perfectly round leaves with a V-notch. In contrast, yellow pond lilies (Nuphar) have cup-shaped yellow flowers and more heart-shaped leaves.

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