Nymphaea alba

White Water Lily Growing & Care Guide

White Water Lily is an iconic, large-flowered aquatic perennial native to Europe and North Africa. It is a legendary addition to ponds and deep water gardens, prized for its large, flat floating pads and cup-shaped, pristine white flowers with brilliant golden-yellow centers that open in full morning sun.

Lighting Full Sun

Water Parameter Aquatic (pH 6.0-7.8)

Substrate Rich clay loam / compost

Water Temp 15°C - 28°C

Toxicity Toxic to Pets (Contains Nupharin)

Botanical macro photography of White Water Lily (Nymphaea alba) - Plant AI care database

How to Identify White Water Lily

White Water Lily (Nymphaea alba) has key botanical markers. Recognizing these features is crucial for successful aquascaping and thriving growth.

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Visual Shape & Growth: Large flat circular floating green pads, with large cup-shaped white flowers floating on the surface.
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Leaf Morphology: Leathery, dark green round leaves (up to 12 inches wide) with a deep, narrow v-shaped notch at the base.
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Root & Anchoring Structure: Thick, creeping blackish rhizomes that anchor deeply in deep pond substrate or container mud.

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Complete Cultivation & Spawning Guide

Follow our detailed scientific water parameters and care guides to keep your White Water Lily thriving.

pH: 6.0 - 7.8. Prefers clean, calm, neutral to slightly acidic pond water. Sensitive to high chlorine or chloramines.

Low. Absorbs carbon dioxide directly from the atmosphere via stomata on the upper surface of its floating leaves.

Full sun. Requires 6 hours of direct sunlight. Shaded plants will produce fewer floating pads and will fail to bloom.

Cut off old, yellowing, or decayed leaf stalks near the base of the rhizome to encourage new pad production.

A heavy root feeder. Insert slow-release aquatic plant fertilizer tabs directly into the root clay every month during spring.

Requires a deep sand-clay soil container (at least 5-8 inches) to contain its vigorous creeping root network.

Optimal temperature is 15°C to 28°C (59°F - 82.4°F). Extremely cold hardy; survives harsh winters if rhizomes do not freeze.

Must be planted in calm, still water. Splashing water on the top surface of the leaves will clog stomata and rot pads.

Provides magnificent shade and cover for pond fish. Keeps water cool, reducing thermal stress on fish in hot summers.

Floating pads shade the water column, starving planktonic algae of light. Pond snails graze old leaves.

Plant in large mesh pots. Submerge 12 to 36 inches deep. Space individual plants 3 to 4 feet apart.

Common Diseases & Treatment

Crown Rot

Symptoms: The central growing point turns black and mushy, causing newly emerging leaves to rot immediately.

Action: Fungal infection caused by poor water circulation or planting too deep in anaerobic mud. Keep crown clear and clean.

Black Spot (Fungal)

Symptoms: Circular black spots develop on the upper leaf surface, causing the pad to dry, turn yellow, and dissolve.

Action: Prune and dispose of infected leaves immediately to prevent fungal spores from spreading across the pond surface.

Frequently Asked Questions

How deep should I plant my White Water Lily?

Ideal planting depth is 12 to 30 inches of water over the top of the container. Shallow planting can overheat the root system.

Why are my lily leaves turning yellow?

This is normal for older outer leaves. If young leaves turn yellow, it indicates nutrient deficiency, particularly nitrogen or iron. Add fertilizer tabs.

Is the White Water Lily toxic?

Yes, the roots and leaves contain nupharin, which is toxic to dogs, cats, and horses if ingested in large quantities.

Can it grow in a running stream?

No. Water lilies hate fast water currents and splashing waves. They require calm, still water to thrive and float.