Prince of Songkla University implements water-efficient landscaping practices across all campuses to minimize irrigation needs and promote sustainable resource use. The University has integrated water-conscious planting designs in both new and existing green spaces, emphasizing the use of drought-tolerant and native plant species that require minimal maintenance. 

  PSU’s landscape areas feature a variety of low-water-consuming plants and trees, such as: 

- Cassia fistula (Golden Shower Tree) – Thailand’s national tree, highly adaptable to dry conditions. 

- Terminalia catappa (Indian Almond Tree) – a large shade tree resilient to heat and salt spray. 

- Plumeria spp. (Frangipani) – ornamental flowering trees that thrive in dry soil. 

- Bougainvillea spp. – colorful shrubs requiring minimal watering. 

- Ixora spp. (West Indian Jasmine) – hardy ornamental shrubs suited for sunny areas. 

- Ficus benjamina (Weeping Fig) – durable tree species suitable for both urban and campus environments. 

These species were selected for their drought resistance, aesthetic value, and adaptability to local climate conditions, reducing the need for frequent watering. 

In addition, PSU has adopted sustainable landscape maintenance practices, including the use of mulching, efficient irrigation systems, and native ground cover, to further reduce water consumption. This approach demonstrates PSU’s commitment to environmentally responsible campus design and supports long-term water sustainability efforts in line with SDG 6.