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Marimo ‘Moss’ Ball

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The Marimo ‘Moss’ Ball is a fuzzy aquatic ball of filamentous green algae. Our standard size is 2-3" round. It thrives without much light in a freshwater aquarium or clear glass container. The Marimo ships damp in a plastic bag. This houseplant is pet friendly!

Flat rate standard shipping; free over $75.

The Sill Plant Promise

We guarantee our plants up to a year from purchase date.

Plant Care

  • Brightness Icon Dropdown Arrow
    • Low
    • Low indirect light to dappled sunlight.
  • Sun Exposure Icon Dropdown Arrow
    • Indirect
    • Indirect light. Keep out of intense, direct sun.
  • Water Icon Dropdown Arrow
    • Lives in Water!
    • Change every 2 weeks. Use filtered, room temperature water.
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Plant Origins

Northern Hemisphere Cold, Alkaline Lakes- Iceland, Japan, Scotland, Estonia, Australia

Plant Bio

The name of Marimo (毬藻) originated from Japanese botanist Tatsuhiko Kawakami (毬 ‘mari’ = ball and 藻 ‘mo’ = generic term for aquatic plants) who first described them growing in lakes on the island of Hokkaido. The Marimo’s shape is the result of freshwater lake motion. Marimo grow quite slowly, at only a few millimeters a year. Marimo moss, as it’s known, is not actually moss at all. Aegagropila linnaei is a freshwater, fuzzy, filamentous green algal colony. As the colony grows, the inner cells go dormant. If the ball is ever split apart, those cells can reactivate to repair the colony - even under artificial light!

The new pet rock.

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