Planting Water Lilies and Aquatic Plants in Your Garden Pond

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Aquatic plants naturalize a pond, oxygenate water, and support fish. Use heavy clay loam—never lightweight potting soil, which floats and lacks nutrients. Wide, shallow containers work best; line baskets with burlap.

Water Lilies

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Hardy lilies survive frost, dying back to roots in winter. They bloom on the surface, tolerate 50°F water, and need 6+ hours of sun. Tropical lilies require 70°F water, die at frost, but offer fragrance and taller blooms. Night-blooming varieties open at dusk.

Planting

Plant rhizomes (hardy) horizontally near container edges; tubers (tropical) vertically in the center. Fill with loam, top with pea gravel. Submerge hardy lilies 6-24 inches deep; tropical 6-12 inches. Less sun? Place shallower.

Winter Care

Hardy lilies in shallow ponds: bring indoors, trim dead leaves, bag with moisture, store at 50°F+. Tropical lilies: trim, repot smaller, store in warm (70°F+) aquarium with light.

Submerged Plants

Anacharis, cabomba, vallisneria oxygenate water and shelter fish. Plant in soil-topped containers, cover with pea gravel. Submerge so tops are 6-12 inches underwater. Protect new plants from fish with temporary bird-netting cages.

Floating Plants

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Water lettuce, water fern, duckweed float freely—roots dangle, no soil needed. They shade water and shelter fish but can overgrow; thin regularly. Most are annuals in cold climates.

Final Thoughts

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A mix of plant types creates a balanced, low-maintenance pond. Move tender plants indoors in winter; treat others as annuals.