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PlantSnap
Plant Care
Silver sword
(Astelia microsperma)
Also Known As
Silver sword, Mountain astelia, Small-seeded astelia
About This Plant
Astelia microsperma is a species of flowering plant in the Asteliaceae family. It is an evergreen perennial herb that produces rosettes of long, narrow, sword-shaped leaves with a bronze-green coloration that turn to green with age. The plant produces small, inconspicuous flowers that are followed by bright orange berries. It is native to New Zealand and is commonly found in forests, shrublands, and alpine areas.
Plant Care Instructions
Outdoor Size Range
24-48 inches (60-120 cm)
Light Requirements
Astelia microsperma prefers bright, indirect sunlight. It can tolerate some shade, but too much shade can cause the leaves to lose their coloration.
Humidity Needs
Astelia microsperma prefers high humidity, but can tolerate average indoor humidity levels.
Fertilizing Schedule
Feed Astelia microsperma with a balanced, water-soluble fertilizer every 2-3 weeks during the growing season (spring and summer).
Pruning Guidelines
Prune Astelia microsperma to remove any dead or damaged leaves. The plant does not require regular pruning.
Common Pests and Diseases
Astelia microsperma is susceptible to spider mites and mealybugs. Treat any infestations with insecticidal soap or neem oil.
Indoor Size Range
12-24 inches (30-60 cm)
Watering Schedule
Water Astelia microsperma regularly, keeping the soil evenly moist but not waterlogged. During the winter months, reduce watering to allow the plant to rest.
Temperature Range
Astelia microsperma prefers cool to moderate temperatures between 50-75°F (10-24°C). It can tolerate brief periods of temperatures as low as 32°F (0°C).
Growing Season
The growing season for Astelia microsperma is spring and summer.
Growing Difficulty Level
Astelia microsperma is considered moderately difficult to grow. It requires specific growing conditions and can be sensitive to changes in its environment.
USDA Hardiness Zones
Astelia microsperma is hardy in USDA zones 9-11.
Did You Know?
The leaves of Astelia microsperma were traditionally used by the Maori people of New Zealand to make baskets and mats.
