Also known as Compressed Spike-Rush · Compressed Spikerush · Flat-Stem Spike-Rush
Flat-stem Spikerush (Eleocharis compressa) is a perennial sedge forming dense mats of flattened stems, found in wet meadows and shorelines.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Thrives in bright light but can tolerate some shade.
Consistent Moisture
100% intensity
Prefers constantly moist to wet soil, even waterlogged conditions.
Clay, Loam, Sandy loam, Wet, Boggy
50% intensity
Moderate
50% intensity
Prefers average room temperatures; protect from extreme heat and frost.
Aquatic
50% intensity
Low
25% intensity
Requires minimal fertilization; feed lightly in spring and mid-summer.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Eleocharis compressa thrives in consistently moist to wet conditions. Keep the soil saturated, especially during the growing season.
It is well-suited for bog gardens, shallow water features, or containers that are regularly watered to prevent drying out. Reduce watering slightly in winter.
Prune to remove any dead, yellowed, or unsightly stems. This can be done at any time of year.
For aesthetic purposes, trim back excessive growth in late autumn or early spring before new growth begins to maintain a tidy appearance.
Easily propagated by division of established clumps in spring. Carefully separate the rhizomes, ensuring each piece has some roots and shoots. Replant immediately in moist soil or directly into water.
Seeds can also be sown in moist conditions.
Repot Eleocharis compressa when the plant becomes root-bound, typically every 1-2 years. Spring is the ideal time for repotting.
Use a well-draining potting mix amended with compost or organic matter, and ensure the new container is large enough to accommodate growth.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Flat-Stem Spikerush (Eleocharis compressa)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Liliopsida |
| Order | Poales |
| Family | Cyperaceae |
| Genus | Eleocharis |
| Species | Eleocharis compressa |
Similar in genus Eleocharis
Answers based on plant encyclopedia data
