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Plant Type

Stem Plant

Growth Difficulty

Beginner / Easy

Plant Height

10-20cm (3.9-7.9 Inches) High

Plant Width

0-10cm (0-3.9 Inches) Wide

Plant Position / Usage


Co2 Requirements

Recommended (Medium light)

Growth Rate


Light Requirements

Medium Light (35-50 PAR)

Temperature Tolerance

5-30°F (Fahrenheit)

PH Range


Carbonate Hardness

0 to 15+ °KH (dKH)

Can Be Grown Emmersed?








  • Common Names - Synonyms:
    Pearlweed, pearl weed, Hemianthus glomeratus, Micranthemum micranthemoides
    Origin - Distribution:
    • North America
    This is a very versatile plant with lanceolate or elliptical leaves, up to 1cm long. The leaves have a slight transparency. The plants grow straight up if not trimmed and light is low. It can grow in aquariums without CO2 injection.

    The abundant branching leads nice, lush bushes suitable for the midground in nano aquariums. In larger aquariums it can also be used as foreground if trimmed frequently.

    The correct name for the plant commercially available is Hemianthus glomeratus. This was clarified by Allen(2011). However, as several nurseries still sell this plant under the old name, we provide the plant description here.
  • Photo 1: Hemianthus glomeratus, emersed. Source : Mihai Zamfir (Allwissend), 2017. All rights reserved. Used with permission.
    Photo 2: Clump of Hemianthus micranthemoides. Source : Corey Benson (Kaldurak), 2017. Adapted photo. All rights reserved. Used with permission.

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