Description:

A clumping water plant that produces rhizomes, and grows quickly; small, airy white flower spikes appear in spring; a freshwater wetland plant that is great for ponds or boggy areas

Ornamental Features

Knotted Spikerush features dainty spikes of white catkins rising above the foliage from late winter to mid spring. Its narrow leaves remain green in color throughout the year.

Landscape Attributes

Knotted Spikerush 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. It is a good choice for attracting bees and butterflies to your yard. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

• Spreading

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

• Mass Planting
• Water Gardens
• Container Planting
• Bog Gardens

Planting & Growing

Knotted Spikerush will grow to be about 3 feet tall at maturity, with a spread of 24 inches. Its foliage tends to remain dense right to the water, not requiring facer plants in front. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 5 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 pH, but grows best in rich soils. It is somewhat tolerant of urban pollution. This species is native to parts of North America.

Knotted Spikerush 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. It is even sizeable enough that it can be grown alone in a suitable container. 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.