Johnson's Saw Sedge Plant Care
Machaerina johnsonii (K.L.Wilson) K.L.Wilson
Updated · Sources · How we source care data
Machaerina johnsonii is a flowering plant in the sedge family. The species was first described in 1980 as Baumea johnsonii by Karen Wilson, who reassigned it in 2015 to the genus, Machaerina.
Bright indirect light
At a glance
How do you care for Johnson's Saw Sedge?
Johnson's Saw Sedge grows best in bright indirect light.
What Is the Johnson's Saw Sedge?
Johnson's Saw Sedge (Machaerina johnsonii) belongs to the Cyperaceae family within the Machaerina genus.
Johnson's Saw Sedge displays a grass-like clumping growth habit, reaching up to tall with a spread of approximately . Johnson's Saw Sedge produces small inconspicuous flowers.
What Light Does the Johnson's Saw Sedge Need?
Johnson's Saw Sedge thrives in bright indirect light. Avoid placing Johnson's Saw Sedge in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Bright indirect light
What Soil Mix Works Best for a Johnson's Saw Sedge?
Moist, well-draining soil rich in organic matter. Good drainage is essential for Johnson's Saw Sedge to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Johnson's Saw Sedge?
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.
How Do You Propagate a Johnson's Saw Sedge?
Johnson's Saw Sedge can be propagated through division, seeds. Similar propagation techniques also apply to jointed twig-rush plant care, which shares the same genus.
Is the Johnson's Saw Sedge Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Johnson's Saw Sedge, 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 Johnson's Saw Sedge?
Johnson's Saw Sedge is susceptible to aphids, scale insects. 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
Johnson's Saw Sedge 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 Machaerina genus — compare its care with other Machaerina species on PlantoScan.
Machaerina is part of the Cyperaceae plant family — browse all Cyperaceae genera and species.
Johnson's Saw Sedge thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Machaerina johnsonii (K.L.Wilson) K.L.Wilson, family Cyperaceae (first published in Telopea 18: 130 (2015)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Johnson's Saw Sedge, 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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