Phormium tenax is widely used as an ornamental planting species in both public and private landscapes due to its distinctive appearance, hardiness and ability to tolerate a range of site conditions. In Ireland, it generally performs well in managed settings and is not currently considered invasive. However, it is recognised as a non-native species with the potential to naturalise in certain habitats, particularly coastal and disturbed areas, and it has exhibited invasive characteristics in some other countries where it has displaced native vegetation.

The Council considers plant selection on a case-by-case basis, having regard to biodiversity objectives, ecological considerations, site suitability, landscape design requirements and current national guidance. While Phormium tenax has historically been used in landscape schemes and is not currently classified as an invasive species in Ireland, its non-native status and potential to naturalise in certain environments are factors that may be considered when assessing planting proposals.

The Council seeks to promote biodiversity and, where appropriate, encourages the use of native and pollinator-friendly planting that supports local wildlife and enhances ecological resilience. The Council will continue to have regard to evolving scientific research, national guidance and advice from relevant biodiversity bodies when considering the suitability of plant species for use in public open spaces and in the assessment of landscaping proposals associated with development.