Purple Spikerush Plant Care

Purple Spikerush (Eleocharis atropurpurea) belongs to the Cyperaceae family within the Eleocharis genus. Purple Spikerush is native to much of Africa, eastern and southern Asia, Australia, and Latin America.

Purple Spikerush displays a grass-like, clumping growth habit, reaching up to 0.5 ft tall with a spread of approximately 0.5 ft. Purple Spikerush produces inconspicuous small brown spikelets.

Leaf size: approximately 6 inches.

Eleocharis atropurpurea requires watering every 2–4 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Purple Spikerush thrives in full sun to part shade.

Eleocharis atropurpurea grows best at temperatures of 60–80°F. Purple Spikerush prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Soggy, nutrient-rich soil with high organic content. Good drainage is essential for Purple Spikerush to prevent waterlogging, which leads to root rot and fungal issues.

Feed Purple Spikerush every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.

Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Divide and repot every 1-2 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

Purple Spikerush can be propagated through division, seeds. Similar propagation techniques also apply to chinese water chestnut plant care, which shares the same genus.

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Purple Spikerush is susceptible to aphids, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Purple Spikerush grows outdoors in USDA Zone 8a – 11b. It survives winters down to planting zone 8a. Purple Spikerush is native to much of Africa, eastern and southern Asia, Australia, and Latin America.