Libertia grandiflora

What are the garden uses for Libertia grandiflora in NZ?

Libertia grandiflora is a much-loved ornamental grass in NZ gardens. This amazing plant is commonly used in mixed and border plantings, planted around the base of trees, mass planted on a bank, or added to cottage or “white” gardens. It is also well suited to modern and tropical gardens and can be used in partially shaded areas. The lush foliage and gorgeous flowers afford wonderful contrasts and are great for brightening a space. Little wonder Libertia grandiflora is so popular in garden designs with landscapers across NZ.

Libertia grandiflora for sale

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Libertia grandiflora care

Libertia grandiflora care is simply about getting a few easy things right so the plant thrives. They prefer a sheltered spot in full sun or part shade. A well-drained soil is crucial for success as heavy and wet soils can cause root rot issues. Adding organic matter like compost into the soil during planting will help with soil fertility. They prefer a dry soil but will benefit from watering during dry periods but be careful to avoid overwatering. Applying shrub fertiliser in spring will keep the plants well-fed for the year. Pruning generally involves remove spent leaves only. Applying mulch around the base of the plant helps retain moisture, regulate soil temperature, and suppress weeds. Monitor for mealy bugs around the roots and treat as needed with a systemic insecticide or soil drench.

What does the NZ native Iris Libertia grandiflora need to grow well?

The NZ native Iris, Libertia grandiflora plants grow best when positioned in full sun or partial shade on a well-drained soil. They are tolerant of frost, coastal environments, and humid climates. Some wind protection is important to ensure the flowers are not damaged and this will also help encourage more prolific flowering.

What is the common name for Libertia grandiflora?

The common names for Libertia grandiflora include NZ Grand Iris and Mikoikoi. NZ Grand Iris is the most popular name while Mikoikoi is the Māori name for the plant.

What size does the Libertia grandiflora plant grow to?

Libertia grandiflora typically grows to 60 cm tall and 75 cm wide. This is an approximation as the climate, level of shade, and amount of care the plant receives will all influence these numbers.

What is the optimum Libertia grandiflora spacing?

The optimum Libertia grandiflora spacing for the plants to merge and become an effective ground cover is 50 cm apart. However, if you want them to grow as a unique plant, they will need to be spaced at least 80 cm apart. The spacing for having them merging to a limited degree is 60-70 cm apart.