Coastal astelia (Astelia banksii)

Coastal astelia

Also known as: Shore kowharawhara

Astelia banksii is an evergreen silver-green plant from the beaches of New Zealand.

Scientific classification

Species

Coastal astelia (Astelia banksii)

Instantly identify plants with a snap

Snap a photo for instant plant ID, gaining quick insights on disease prevention, treatment, toxicity, care, uses, and symbolism, etc.

Download the App for Free

Perennial

Lifespan

1 m

Spread

Green, Gray, Silver

Leaf Color

Purple

Fruit Color

Green

Flower Color

Evergreen

Leaf type

Images of Coastal astelia

Distribution of Coastal astelia

Distribution Map

Coastal astelia is a plant species native to the temperate regions of Oceania. It has spread from its indigenous habitat to various parts of the world primarily through cultivation. Despite this expanded range, coastal astelia remains predominantly associated with its original locality, where it thrives in the local climate and ecosystems.

Native

Cultivated

Invasive

Introduced

No species reported

Discover plant distribution and habitat

Gain insights into where plants thrive and how they adapt, helping you identify, cultivate, and protect them with essential information on habitats, distribution maps, and climate trends.

Download the App for Free

Hemisphere Trend Curve

Northern

Sorthern

Quickly Identify Coastal astelia

Silvery or pale-green foliage

Narrow, gently recurved leaves

Mature height of 3 to 4 feet (90 to 120 cm)

Dioecious flowering system with modest flowers

Cold hardy down to 20-25°F (-6 to -4°C)

Identify plants with a snap

Instantly identify plants with AI: Snap a photo, and get accurate results within seconds.

Download the App for Free

Care Guide for Coastal astelia

Every week

Water

Partial sun

Sunlight

Water: Coastal astelia flourishes in consistent moisture and subtropical climates, balancing hydration and drought resistance. Weekly watering is essential for its lush foliage. As an evergreen, coastal astelia showcases resilience across varied climates, relying on adequate soil moisture for temperature adaptability.

Fertilize: For coastal astelia, use balanced nutrition fertilizers monthly during spring and summer, bi-monthly in fall, and stop in winter. Apply a diluted mixture to avoid root burn, promoting healthy foliage and roots. Adjust quantities based on size and follow label recommendations, while using gloves to prevent over-fertilization.

Pruning: Coastal astelia features long, arching leaves, enhancing garden aesthetics. Prune in early spring to remove damaged foliage, encouraging new growth and maintaining shape. Proper pruning improves air circulation, reduces disease risk, and promotes vigorous, year-round growth for a lush appearance.

Propagation: Coastal astelia thrives in coastal regions and is known for its resilience. Propagation through division involves carefully separating the root ball into smaller sections, ensuring each has adequate roots and shoots. This method promotes the growth of new, vigorous plants, making it accessible for beginner gardeners.

Repotting: Coastal astelia grows as a bush and needs repotting every 2-3 years. Transplant in late winter using a container 2-3 inches wider. After repotting, place coastal astelia in well-draining soil and maintain consistent moisture to promote recovery and healthy silvery foliage.

Get tips and tricks for your plants.

Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.

Download the App for Free