Giant Calliergon Plant Care
Calliergon giganteum (Schimp.) Kindb.
Updated · Sources · How we source care data
Calliergon giganteum, the giant spearmoss, giant calliergon moss, or arctic moss, is an aquatic plant found on lake beds in tundra regions. It has no wood stems or flowers, and has small rootlets instead of roots.
Low to medium indirect light
At a glance
How do you care for Giant Calliergon?
Giant Calliergon grows best in low to medium indirect light.
What Is the Giant Calliergon?
Giant Calliergon (Calliergon giganteum) belongs to the Calliergonaceae family within the Calliergon genus.
Giant Calliergon displays a low mat-forming ground cover growth habit, reaching up to tall with a spread of approximately . Giant Calliergon produces small, inconspicuous flowers.
What Light Does the Giant Calliergon Need?
Giant Calliergon thrives in low to medium indirect light. Avoid placing Giant Calliergon in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Low to medium indirect light
What Soil Mix Works Best for a Giant Calliergon?
Sphagnum peat moss with perlite for moisture retention and aeration. Good drainage is essential for Giant Calliergon to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Giant Calliergon?
Repot every 1-2 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Giant Calliergon?
Giant Calliergon can be propagated through spores, division of clumps. Similar propagation techniques also apply to heartleaf cool-moss plant care, which shares the same genus.
Is the Giant Calliergon Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Giant Calliergon, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Giant Calliergon?
Giant Calliergon is susceptible to slugs, snails, aphids. 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.
Keep exploring plants
Giant Calliergon is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Calliergon genus — compare its care with other Calliergon species on PlantoScan.
Calliergon is part of the Calliergonaceae plant family — browse all Calliergonaceae genera and species.
Giant Calliergon copes with lower light than most plants — browse the full list of low-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Calliergon giganteum (Schimp.) Kindb., family Calliergonaceae (first published in Canad. Rec. Sci. 6(2): 72 1894) — World Flora Online record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Giant Calliergon, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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