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Pearl Grass (Micranthemum umbrosum)

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Pearl Grass

Beginner

Micranthemum umbrosum

A stem plant with small round leaves strung like pearls. Used in mid to background planting. Produces beautiful bubbles in water. CO2 injection encourages lush growth.

Growing Difficulty
Beginner
Temperature
20〜28℃
Size
5-20cm
Watering
Liquid fertilizer + root tabs

About

Pearl Grass (Micranthemum umbrosum) is a stem plant native to North and South America. Named for its small round leaves strung together like pearls. Beautiful oxygen pearling during photosynthesis makes it widely used in mid to background aquascaping. Grows denser and more vigorously with CO2 addition.

Basic Info

Origin

North and South America

Size

5-20cm

Temperature

20〜28℃

Watering & Fertilizer

Liquid fertilizer + root tabs

Growing Tips

Lighting

Grows under medium+ light

CO2

CO2 injection creates denser, more beautiful growth

Pearling

Pearling during photosynthesis is beautiful

Propagation

Propagates readily by replanting cuttings

Pearl GrassPearlingStem plantMidground

Pearl Grass FAQ

QWhat is the growing difficulty level for Pearl Grass?
A

Beginner. A variety suitable for beginners. No special equipment or experience is required—you can grow it without problems by setting up a basic cultivation environment.

QWhat is the ideal temperature for Pearl Grass?
A

The ideal temperature for Pearl Grass is 20〜28℃. Avoid sudden temperature changes and maintain a stable environment.

QHow large does Pearl Grass get?
A

The mature size of Pearl Grass is 5-20cm. This may vary slightly depending on cultivation environment and individual differences.

QHow should I water and fertilize Pearl Grass?
A

Pearl Grass: watering & fertilizer — Liquid fertilizer + root tabs. Aim for appropriate frequency and amount.

QWhat is the typical price for Pearl Grass?
A

The price of Pearl Grass varies significantly by variety, characteristics, size, and lineage. Please check ボタちょく's price guide for the latest market information.

Last updated: June 24, 2026

References & Sources

Edited & verified by: BoTachoku Editorial Team

The classifications, regulations, and growing data on this page are created and verified based on the primary information database below.

Primary sources

Taxonomy & Authority

Accepted name: Micranthemum umbrosum (J.F.Gmel.) S.F.Blake

Authority databases: GBIF · POWO

Nomenclature follows global taxonomic authority databases.

Regulations & Conservation Status

Not CITES-listed

Sources: 環境省 特定外来生物等一覧(外来生物法) / CITES Appendix II 植物掲載分類群(科・属レベル)

Regulations may change. Always verify the latest information with the relevant authorities.

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