Photo: Oscar DoveCC BY 4.0via iNaturalistresized / cropped
Cortaderia splendens Plant Care
Austroderia splendens (Connor) N.P.Barker & H.P.Linder
Updated · Sources · How we source care data
This plant's long, arching green leaves with silver undersides give it a striking, elegant appearance. Originating from New Zealand, Austroderia splendens is highly sought after by plant collectors for its unique foliage and ability to add a touch of sophistication to any garden or landscape.
Every 7–14 days
Full sun to partial shade
50–85°F
40–70%
At a glance
How do you care for Cortaderia splendens?
Water Cortaderia splendens 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 50–85°F (10–29°C) and 40–70% humidity. Fertilize it every 8 months during the growing season.
Where Is the Cortaderia splendens Native To?
What Is the Cortaderia splendens?
Cortaderia splendens (Austroderia splendens) belongs to the Poaceae family within the Austroderia genus. Cortaderia splendens is native to New Zealand.
Cortaderia splendens displays a tall, clumping grass growth habit, reaching up to 6 ft tall with a spread of approximately 3 ft. Cortaderia splendens produces feathery plumes in shades of green, pink, or purple.
Leaf size: approximately 12 inches.
How Often Should You Water a Cortaderia splendens?
Austroderia splendens 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 Cortaderia splendens Need?
Cortaderia splendens thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Cortaderia splendens Prefer?
Austroderia splendens grows best at temperatures of 50–85°F. Cortaderia splendens prefers humidity levels of 40–70%.
Temperature
50–85°F
Humidity
40–70%
What Soil Mix Works Best for a Cortaderia splendens?
Well-draining sandy loam with added organic matter. Good drainage is essential for Cortaderia splendens to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Cortaderia splendens?
Feed Cortaderia splendens 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 Cortaderia splendens?
Divide and 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 Cortaderia splendens?
Cortaderia splendens can be propagated through division, rhizome cuttings. Similar propagation techniques also apply to south island toetoe plant care, which shares the same genus.
Is the Cortaderia splendens Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Cortaderia splendens, 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 Cortaderia splendens?
Cortaderia splendens is susceptible to aphids, grasshoppers, 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 Cortaderia splendens Need?
Cortaderia splendens grows outdoors in USDA Zone 9a – 10b. It survives winters down to planting zone 9a. Cortaderia splendens is native to New Zealand. In cooler regions, grow Cortaderia splendens as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 9a – 10b
Keep exploring plants
Cortaderia splendens 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 Austroderia genus — compare its care with other Austroderia species on PlantoScan.
Austroderia is part of the Poaceae plant family — browse all Poaceae genera and species.
Cortaderia splendens 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: Austroderia splendens (Connor) N.P.Barker & H.P.Linder, family Poaceae (first published in Ann. Missouri Bot. Gard. 97: 344 (2010)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Cortaderia splendens, 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.
- Photo: Oscar Dove, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 9a – 10b, estimated from the plant's typical growing conditions.
- 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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