Pencil Saw-sedge Plant Care
Lepidosperma longitudinale Labill.
Updated · Sources · How we source care data
Lepidosperma longitudinale is commonly known as the pithy sword-sedge or pith saw-sedge. It is an evergreen species of sedge that is native to swampy areas of most Australian states.
Every 7–14 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Pencil Saw-sedge?
Water Pencil Saw-sedge every 7–14 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 50–80°F (10–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
What Is the Pencil Saw-sedge?
Pencil Saw-sedge (Lepidosperma longitudinale) belongs to the Cyperaceae family within the Lepidosperma genus. Pencil Saw-sedge is native to swampy areas of most Australian states. Pencil Saw-sedge is also known as Long Saw-sedge.
Pencil Saw-sedge displays a grass-like clumping growth habit, reaching up to 1.5 ft tall with a spread of approximately 0.5 ft. Pencil Saw-sedge produces small inconspicuous flowers on slender stems.
Leaf size: approximately 12 inches.
How Often Should You Water a Pencil Saw-sedge?
Lepidosperma longitudinale requires watering every 7–14 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–14 days
Let soil partially dry between waterings
What Light Does the Pencil Saw-sedge Need?
Pencil Saw-sedge thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Pencil Saw-sedge Prefer?
Lepidosperma longitudinale grows best at temperatures of 50–80°F. Pencil Saw-sedge prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Pencil Saw-sedge?
Well-draining sandy soil mix with added organic matter. Good drainage is essential for Pencil Saw-sedge to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Pencil Saw-sedge?
Feed Pencil Saw-sedge every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Pencil Saw-sedge?
Repot every 2-3 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 Pencil Saw-sedge?
Pencil Saw-sedge can be propagated through division, seeds. Similar propagation techniques also apply to common saw-sedge plant care, which shares the same genus.
Is the Pencil Saw-sedge Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Pencil 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 Pencil Saw-sedge?
Pencil Saw-sedge is susceptible to aphids, spider mites. 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.
What USDA Hardiness Zone Does the Pencil Saw-sedge Need?
Pencil Saw-sedge grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Pencil Saw-sedge is native to swampy areas of most Australian states. In cooler regions, grow Pencil Saw-sedge as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Pencil 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 Lepidosperma genus — compare its care with other Lepidosperma species on PlantoScan.
Lepidosperma is part of the Cyperaceae plant family — browse all Cyperaceae genera and species.
Pencil Saw-sedge thrives in bright light and direct sun — see other bright-light plants.
More Lepidosperma Species
Other Lepidosperma species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Lepidosperma longitudinale Labill., family Cyperaceae (first published in Nov. Holl. Pl. 1: 16 (1805)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Pencil 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.
- Hardiness zone: USDA Zone 12a, calculated from the plant's minimum temperature.
- 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.
Identify Plants Like the
Pencil Saw-sedge Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species