Common spike-rush, Creeping spike-rush, Marsh spike-rush.
Eleocharis palustris
🌿 Morphology
🌞 Growing conditions
🌍 Origin and family
🌾 Uses
Warning: Despite the care taken in writing this sheet, it is essential to cross-reference sources before using or consuming any plant. When in doubt, consult a qualified professional
Permaculture uses
The tubers are edible raw or cooked, though small and requiring some effort to harvest. The plant can be used for phytoremediation, especially in constructed wetlands to filter pollutants. It provides habitat and food for wildlife, particularly waterfowl. Good groundcover for wet areas, erosion control on banks, and a decorative element in water gardens.
Permapeople description
Eleocharis palustris, the common spike-rush, is a plant species widespread across North America, Europe, and parts of Asia. It is a wetland plant, typically found in marshes, swamps, and along the edges of ponds and streams.
Botanical description
Eleocharis palustris is a perennial herbaceous plant belonging to the sedge family (Cyperaceae). It typically grows to a height of 10-50 cm. Its stems are erect, cylindrical, and hollow. The leaves are reduced to sheaths at the base of the stem. The inflorescence is a single, terminal spikelet, typically 5-15 mm long, consisting of numerous spirally arranged scales, each subtending a single flower. Flowers are bisexual with 3 stamens and a 2-3 stigmatic style. Fruits are achenes, lens-shaped and smooth. The plant spreads by rhizomes, forming dense colonies in suitable habitats.
Companion planting
Eleocharis palustris thrives in wet environments and can be associated with other wetland plants like cattails (Typha), bulrushes (Scirpus), and water lilies (Nymphaea). It doesn't have significant known companion plant relationships regarding positive or negative effects, it is mostly about habitat suitability. Avoid planting with species that demand dry soil.
Propagation methods
Propagation can be achieved through division of rhizomes in spring or autumn. Seeds can also be used, though germination can be slow and erratic. Sowing seeds requires a period of cold stratification. Cuttings are generally not an effective method.
History and traditions
Historically, the tubers were used as a food source by indigenous peoples in North America and Europe. They are said to have a sweet, nutty flavor. The plant has also been used traditionally in some cultures for its purported medicinal properties, though scientific evidence is limited. In some cultures, the plant is seen as a symbol of resilience and adaptability.
Usage calendar
Flowering occurs typically from May to August. Tubers can be harvested year-round, though easier during periods of lower water. Planting is best done in spring or early autumn. Pruning is generally not required, though dead or damaged stems can be removed as needed.