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Dietes robinsoniana (Wedding Lily)

Lord Howe Wedding Lily, Robinson’s Dietes, Giant Lord Howe Island Iris

Dietes robinsoniana, commonly known as Wedding Lily or Lord Howe Wedding Lily, is a striking, clump-forming perennial native to Lord Howe Island. It produces large, elegant white flowers with yellow centres on tall stems, typically blooming in late spring and summer. Growing up to 1.5 metres tall, it features broad, strap-like evergreen foliage. Ideal for feature planting or mass displays, it thrives in full sun to partial shade and tolerates coastal conditions and light frosts in New Zealand.

Dietes robinsoniana elegant white flowers.
A large Dietes robinsoniana (Wedding Lily) plant, featuring elegant white flowers and lush, green foliage.
A Dietes robinsoniana (Lord Howe Wedding Lily) plant with elegant white flowers and lush green foliage.

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Suited to regions:All regions
Plant type:Perennials
Height:1.20 m
Spread:1.00 m
Flowering time:Spring, Summer
Tolerances:Coastal, Extended dry periods, Hardy, Wind
Garden uses:Living areas, Pool areas
Garden styles:Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Modern
Easy to grow?Yes
Maintenance requirementsLow
Growth rateMedium
Also known asLord Howe Wedding Lily, Robinson’s Dietes, Giant Lord Howe Island Iris
Sku11312

Growing Dietes robinsoniana Successfully in NZ

To grow Dietes robinsoniana successfully in New Zealand, plant it in a sunny to partially shaded spot with well-drained soil. This tall, hardy perennial is well-suited to coastal areas and tolerates light frosts. Water regularly during establishment, then only in extended periods of dryness. Apply a slow-release fertiliser in spring to promote healthy foliage and flower production. Remove spent flower stems and old leaves to maintain a tidy look. Ideal for mass planting or as a bold garden feature.

Dietes robinsoniana Care Tips

Plant in full sun to partial shade with well-drained soil. Water regularly during the establishment phase, then only during prolonged dry periods. Feed with a balanced slow-release fertiliser in spring to support flowering and healthy foliage. Remove old leaves and spent flower stalks to keep the plant tidy. Hardy and tolerant of coastal conditions and light frosts, Dietes robinsoniana is a low-maintenance choice for feature planting or large-scale landscaping in New Zealand gardens.

Plant Size and Spacing

Dietes robinsoniana typically grows to 1.2–1.5 metres tall and about 1 metre wide. When planting, space plants approximately 80–100 cm apart to allow for full clump development and good airflow. This spacing is ideal for mass plantings, feature borders, or coastal landscapes, ensuring each plant has room to thrive while creating a bold, structured effect in New Zealand gardens.

Why Buy Dietes robinsoniana from The Plant Company

Buy Dietes robinsoniana from The Plant Company for premium, nursery-grown plants that are healthy, hardy, and ready to thrive in your garden. Our plants are carefully grown to have strong roots and lush foliage. We offer fast, nationwide delivery and expert care advice to support long-term success. Perfect for feature planting or mass displays, Dietes robinsoniana adds height, elegance, and low-maintenance beauty to any landscape.

Questions and Answers

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