Photo: Alice ShanksCC BY 4.0via iNaturalistresized / cropped
Mountain Astelia Plant Care
Astelia nervosa Banks & Sol. ex Hook.f.
Updated · Sources · How we source care data
With its striking silvery-green, sword-shaped leaves, Astelia nervosa originates from the forests of New Zealand. Plant collectors covet this unique species for its architectural form and ability to thrive in shady, moist environments.
Every 7–14 days
Partial to full shade
50–75°F
50–70%
At a glance
How do you care for Mountain Astelia?
Plant Mountain Astelia in partial to full shade (USDA zones 8a–10b) and water a young shrub every 7–14 days until it is established. It tolerates temperatures of 50–75°F (10–24°C). Fertilize it every 6 months during the growing season.
Where Is the Mountain Astelia Native To?
What Is the Mountain Astelia?
Mountain Astelia (Astelia nervosa) belongs to the Asteliaceae family within the Astelia genus. Mountain Astelia is native to New Zealand. Mountain Astelia is also known as Rough Astelia.
Mountain Astelia displays a clumping, fountain-like growth habit, reaching up to 3 ft tall with a spread of approximately 3 ft. Mountain Astelia produces inconspicuous flowers, grown for foliage.
Leaf size: approximately 18 inches.
How Often Should You Water a Mountain Astelia?
Water a young or newly planted Mountain Astelia every 7–14 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.
Watering Frequency
Every 7–14 days
Until established; then in dry spells
What Light Does the Mountain Astelia Need?
Mountain Astelia thrives in partial to full shade. The optimal light range is 100–500 lux. Avoid placing Mountain Astelia in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Partial to full shade
100–500 lux
What Temperature and Humidity Does the Mountain Astelia Prefer?
Astelia nervosa tolerates temperatures of 50–75°F. Mountain Astelia prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
50–75°F
Humidity
50–70%
What Soil Mix Works Best for a Mountain Astelia?
Well-draining, fertile soil with added organic matter like compost. Good drainage is essential for Mountain Astelia to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Mountain Astelia?
Feed Mountain Astelia every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.
Stop feeding by late summer so new growth can harden before winter.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
Where Should You Plant a Mountain Astelia?
Choose a spot with partial to full shade and well-draining, fertile soil with added organic matter like compost. Avoid low spots where water collects after rain.
Mountain Astelia is suited to USDA Zone 8a – 10b.
Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.
How Far Apart Should You Plant a Mountain Astelia?
Mountain Astelia can spread to about 3 ft (0.9 m) and reach about 3 ft (1 m) tall. Space plants about 3 ft (0.9 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.
Planning a row or hedge? Try the plant spacing calculator.
How Do You Prune a Mountain Astelia?
Prune Mountain Astelia while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.
If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.
How Do You Care for a Mountain Astelia in Winter?
Mountain Astelia is hardy down to USDA zone 8a, so once established it can stay outdoors through winter in that zone and warmer ones.
Water deeply in late autumn before the ground freezes, and spread a 5–8 cm (2–3 in) layer of mulch over the root zone, keeping it away from the trunk.
Young and container-grown shrubs need extra protection: roots in a pot freeze much more easily than roots in the ground.
How Do You Propagate a Mountain Astelia?
Mountain Astelia can be propagated through division, offsets. Similar propagation techniques also apply to fragrant astelia plant care, which shares the same genus.
Is the Mountain Astelia Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Mountain Astelia, 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 Mountain Astelia?
Mountain Astelia 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.
What USDA Hardiness Zone Does the Mountain Astelia Need?
Mountain Astelia grows outdoors in USDA Zone 8a – 10b. It survives winters down to planting zone 8a. Mountain Astelia is native to New Zealand.
Hardiness Zone
Zone 8a – 10b
Keep exploring plants
Mountain Astelia 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 Astelia genus — compare its care with other Astelia species on PlantoScan.
Astelia is part of the Asteliaceae plant family — browse all Asteliaceae genera and species.
Mountain Astelia copes with lower light than most plants — browse the full list of low-light plants.
More Astelia Species
Other Astelia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Astelia nervosa Banks & Sol. ex Hook.f., family Asteliaceae (first published in Fl. Nov.-Zel. 1: 260 (1853)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Mountain Astelia, 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: Alice Shanks, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 8a – 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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