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Water Lettuce

Pistia stratiotes

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Water Lettuce (Pistia stratiotes) at Flagg's Garden Center

Water Lettuce foliage

Water Lettuce foliage

(Photo courtesy of NetPS Plant Finder)

Water Lettuce (Pistia stratiotes) at Flagg's Garden Center

Water Lettuce foliage

Water Lettuce foliage

(Photo courtesy of NetPS Plant Finder)

Plant Height:  4 inches

Flower Height:  6 inches

Spread:  14 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  7b

Other Names:  Water Cabbage

Description:

This water plant has interesting square to fan shaped foliage that is velvety and beautifully ribbed; flowers are somewhat inconspicuous; excellent for edging a water feature or pond; watch for aphids; invasive in frost free areas

Ornamental Features

Water Lettuce's attractive tomentose square leaves remain bluish-green in color throughout the year on a plant with a spreading habit of growth. It features subtle chartreuse tubular flowers with creamy white overtones rising above the foliage from early to late summer.

Landscape Attributes

Water Lettuce is an herbaceous evergreen perennial with a low habit of growth, spreading atop the surface of the water. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.

This plant will require occasional maintenance and upkeep, and is best cleaned up in early spring before it resumes active growth for the season. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Spreading
  • Invasive
  • Insects

Water Lettuce is ideally suited for growing in a pond, water garden or patio water container, and is recommended for the following landscape applications;

  • Water Gardens
  • Container Planting

Planting & Growing

Water Lettuce will grow to be only 4 inches tall at maturity extending to 6 inches tall with the flowers, with a spread of 14 inches. Its foliage tends to remain low and dense right to the water. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 10 years. As an evegreen perennial, this plant will typically keep its form and foliage year-round.

This plant does best in full sun to partial shade. As an aquatic plant, it requires a suitable water garden environment and will benefit from special planting and ongoing care practices; consult one of our in-store experts for further details and instructions. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. This species is not originally from North America.

Water Lettuce is a fine choice for the water garden, but it is also a good selection for planting in outdoor pots and containers. Because of its spreading habit of growth, it is ideally suited for use as a 'spiller' in the 'spiller-thriller-filler' container combination; plant it near the edges where it can spill gracefully over the pot. Note that when grown in outdoor pots and containers, aquatic plants like this one will require a special growing environment that meets their requirement for consistent moisture.

This is a tender plant that may require additional winter protection in our area; contact the store for more information.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Container  Water 
Applications
Flowers  Foliage Color 
Ornamental Features