Squarestem spikerush (Eleocharis quadrangulata)

Also known as: Squarestem spikerush

This plant typically thrives in and around freshwater environments such as lakes, ponds, and other aquatic settings. It is a perennial herb that spreads through rhizomes and can reach heights of 0.5 to 1 meter. The stem is notably spongy, compressible, and sharply four-angled, measuring a few millimeters in width. Its inflorescence consists of a solitary spikelet, ranging from 1.5 to 7.5 centimeters in length, and is composed of multiple flowers enveloped in light brown bracts.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Squarestem spikerush

Lifespan

Perennial

Plant Type

Grass

Plant Height

30 cm to 91 cm

Spread

N/A (not applicable for this type of plant)

Leaf Color

Green

Flower Size

Small, less than 1 cm

Flower Color

Brown

Images of Squarestem spikerush

Quickly Identify Squarestem spikerush

Square stem distinguishes squarestem spikerush from other species, growing up to 35 inches (90 cm).

Sparse leaves form sheaths, transitioning from green above to white below.

Tiny brown-flowered spikelets densely clustered, each around 0.4 inches (1 cm) long.

Distinctive spongy stem, green and buoyant, up to 2 feet (60 cm) tall.

Yellow-brown achenes with prominent longitudinal stripes, seed enclosed in hard scales.

Scientific Classification of Squarestem spikerush

Phylum

Vascular plants

Class

Monocotyledons

Order

Poales

Family

Sedge

Genus

Eleocharis

Species

Squarestem spikerush

Planting and Growing of Squarestem spikerush

Care Difficulty

Easy

Watering Schedule

Every 4 days

Sunlight Requirements

Full sun

Sunshine Duration

6-10 hours

Ideal Temperature

68-77℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Squarestem spikerush?

The plant should be watered until the soil is thoroughly moist but not waterlogged. Ideal watering ensures that water penetrates deeply to reach the root system, which typically means providing about 500 milliliters each time.

What are the symptoms of an underwatered Squarestem spikerush? ›

What should I do if my Squarestem spikerush is not getting enough water? ›

What are the symptoms of an overwatered Squarestem spikerush? ›

How to save an overwatered Squarestem spikerush? ›

What Are the Sunlight Requirements for Squarestem spikerush?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 6 to 8 hours

Partial to full sun exposure can meet Eleocharis quadrangulata's light requirements, promoting vigorous growth and a healthy appearance. Adequate sunlight supports effective photosynthesis, bubbles through water environments, and enhances overall vitality.

What is the ideal light condition for Eleocharis quadrangulata? ›

What solutions exist to achieve ideal lighting for this plant? ›

What are the benefits of providing ideal light for Eleocharis quadrangulata? ›

What Is the Ideal Temperature Range for Squarestem spikerush?

Ideal Temperature: 68 ~ 77℉

For Eleocharis quadrangulata, maintaining an ideal temperature between 68°F to 77°F is essential for optimal growth. This range ensures that the metabolic processes occur efficiently and that the plant thrives without stress.

What Soil is Best for Squarestem spikerush?

Soil type: Loam, Sandy loam, Clay soil

Soil PH: 6.5 ~ 7.5

Eleocharis quadrangulata thrives in moist soil conditions. Ensuring your soil retains moisture will keep the plant healthy, preventing the foliage from drying out. Nutrient-rich soil is essential for the proper growth of Eleocharis quadrangulata. Soils high in nutrients provide the plant with necessary elements for vibrant growth and resilience against pests. While moisture retention is crucial, good drainage ensures that the roots do not become waterlogged. Well-draining soil prevents root rot and maintains a healthy root system.

How to Fertilize Squarestem spikerush?

Fertilizer type: Balanced

For Eleocharis quadrangulata, it's vital to apply a moderate amount of fertilizer. Use approximately half the recommended dose indicated on your liquid fertilizer packaging. This amount helps ensure the plant receives adequate nutrients without risking over-fertilization.

How to Prune Squarestem spikerush?

Pruning Time: Spring, Summer

Start by identifying any dead or damaged stems, using clean and sharp scissors to cut them gently. Trim the plant back to a uniform height, retaining its natural shape. This fosters new growth and maintains its attractive appearance. For more robust growth, consider thinning the plant from the base. Remove older, woodier stems to encourage new shoot development. Space the cuts evenly to keep the plant looking full and healthy, enhancing its natural growth patterns. More About Pruning Techniques→

How to Propagate Squarestem spikerush plant?

Propagate Time: Spring, Early summer, Late summer

Collect seeds from mature plants and clean them thoroughly. Allow them to dry for a few days before sowing, ensuring they are free from any fungal spores or pests.

Plant the seeds in a tray filled with moist, well-draining soil. Cover them lightly with soil and maintain a consistent moisture level until germination occurs, which typically takes several weeks.

Carefully dig up a mature plant, ensuring the roots are not damaged. Use a sharp spade to divide the clump into smaller sections, making sure each division has a good root system and some foliage.

More About Propagating Techniques→

How to Repot Squarestem spikerush plant?

Repotting frequency: Once every two years

For Eleocharis quadrangulata, repotting is ideal when the plant shows signs of being root-bound or when growth becomes stunted. A telltale sign is roots curling out of the drainage holes. Typically, this need arises during the warmer months when the plant is in its active growth phase.

Select a pot that is a step larger than the current one, preferably terracotta for its breathability. This material assists in moisture regulation, preventing roots from becoming waterlogged, while also allowing for some healthy root expansion.

Opt for a loamy, well-draining soil mix. This type of soil provides the balance of moisture retention and drainage, essential for preventing root rot and ensuring that the roots of Eleocharis quadrangulata receive sufficient air flow.