Libertia Ixiodes

 Libertia ixioides

Common names: New Zealand Iris, Mikoikoi

Family: Iridaceae

Origin: New Zealand

Plant Type: Evergreen Perennial / Clump-forming Iris

Overview

Libertia ixioides is a striking NZ native perennial prized for its stiff, upright, sword-like leaves and clean architectural form. Its foliage ranges from green to golden hues depending on cultivar, and it produces a delicate display of white star-shaped flowers in late spring to early summer. Exceptionally hardy and low-maintenance, it is ideal for modern landscapes, mass plantings, and tough sites.

Key Features

Foliage: Upright, rigid, sword-like leaves forming a dense clump; colour typically green to golden-green depending on conditions.
Flowers / Fruit: White starry flowers in late spring–early summer, followed by attractive orange seed pods that extend seasonal interest.
Form & Habit: Clump-forming perennial with a clean, architectural silhouette.
Growth Rate: Moderate.
Cultural & Ecological Value: Provides habitat structure, attracts pollinators, and performs well in dry, exposed, or coastal environments.

Mature Size

Attribute	Size
Height	40–60 cm
Spread	40–60 cm
Form	Upright, clump-forming perennial

Ideal Growing Conditions

Requirement	Detail
Light	Full sun to part shade (best colour in full sun)
Water	Low to moderate; drought-tolerant once established
Soil	Free-draining soils; thrives in sand, gravel, or poor soils
pH Range	Neutral to slightly acidic
Frost Tolerance	Hardy; tolerates frost, coastal wind, and exposed sites

Landscaping & Garden Uses

• Architectural accent plant in modern or native gardens

• Mass planting for strong structural impact

• Excellent for coastal and dry landscapes

• Works well along paths, borders, and rockeries

• Great companion to flaxes, grasses, hebes, and coprosmas

Care & Maintenance

Pruning: Remove old or damaged leaves as needed; trim spent flower stems after flowering.
Watering: Water during establishment; low water needs afterwards.
Feeding: Responds to a light spring fertiliser in poor soils.
Pests & Diseases: Very hardy and generally pest-free.

Additional Tips

• Plant in full sun to maximise colour and form.

• The orange seed capsules provide long-lasting ornamental value.

• Ideal for low-maintenance, drought-tolerant gardens.

Fun Fact / Botanical Insight

The genus Libertia is named after Marie-Anne Libert, a pioneering Belgian botanist—though this species is uniquely New Zealand, thriving in conditions many other irises cannot tolerate.

Why Choose Libertia ixioides?

A bold, architectural NZ native offering year-round structure, seasonal flowers, and impressive durability—perfect for modern landscapes, restoration projects, and low-maintenance garden design.

Pot Size: These are our standard size in 7cm square pots.