Alpine Bog-rush Plant Care
Carpha alpina R.Br.
Updated · Sources · How we source care data
Carpha alpina, commonly known as small flower-rush, is a tufted perennial sedge from the family Cyperaceae. It is found primarily in south-east Australia and both islands of New Zealand, but also in Papua New Guinea.
Every 3–5 days
Full sun to part shade
60–80°F
50–70%
At a glance
How do you care for Alpine Bog-rush?
Water Alpine Bog-rush every 3–5 days, letting the top layer of soil dry out between waterings, and give it full sun to part shade. It prefers temperatures of 60–80°F (16–27°C) and 50–70% humidity. Fertilize it every 8 months during the growing season.
What Is the Alpine Bog-rush?
Alpine Bog-rush (Carpha alpina) belongs to the Cyperaceae family within the Carpha genus. Alpine Bog-rush is also known as Alpine Club-rush.
Alpine Bog-rush displays a grass-like clumping growth habit, reaching up to 1.5 ft tall with a spread of approximately 0.5 ft. Alpine Bog-rush produces small inconspicuous flowers.
Leaf size: approximately 12 inches.
How Often Should You Water a Alpine Bog-rush?
Carpha alpina requires watering every 3–5 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 3–5 days
Let soil partially dry between waterings
What Light Does the Alpine Bog-rush Need?
Alpine Bog-rush thrives in full sun to part shade.
Light Requirement
Full sun to part shade
What Temperature and Humidity Does the Alpine Bog-rush Prefer?
Carpha alpina grows best at temperatures of 60–80°F. Alpine Bog-rush prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
60–80°F
Humidity
50–70%
What Soil Mix Works Best for a Alpine Bog-rush?
Moist, acidic soil with high organic content. Good drainage is essential for Alpine Bog-rush to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Alpine Bog-rush?
Feed Alpine Bog-rush every 8 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 8 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 Alpine Bog-rush?
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 Alpine Bog-rush?
Alpine Bog-rush can be propagated through division, seeds.
Is the Alpine Bog-rush Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Alpine Bog-rush, 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 Alpine Bog-rush?
Alpine Bog-rush is susceptible to fungal diseases, rust. 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 Alpine Bog-rush Need?
Alpine Bog-rush grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Alpine Bog-rush as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Alpine Bog-rush 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 Carpha genus — compare its care with other Carpha species on PlantoScan.
Carpha is part of the Cyperaceae plant family — browse all Cyperaceae genera and species.
Alpine Bog-rush 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: Carpha alpina R.Br., family Cyperaceae (first published in Prodr. Fl. Nov. Holland. : 230 (1810)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Alpine Bog-rush, 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 13a, 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.
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