The type of green roof that our research has focused on is lightweight, thin(4 6 growing medium), and planted with hardy, drought-resistant plants to minimize weight, cost, and maintenance.
Hence, it is critical to select green roof plants that can survive water-decits, particularly in climates with hot and dry summers. Shrubs are perennial plants which can be drought resistant and may be suitable for green roofs. However, studies about survival and health of shrubs are limited.
An extensive green roof is a lightweight, low-maintenance system designed primarily for environmental benefits rather than recreational use. These roofs typically feature shallow substrates and a selection of hardy, drought-resistant plants, such as sedum, moss, and low-growing wildflowers.
Beyond managing stormwater, a green roof can markedly enhance biodiversity. You might think of tiny homes as small spaces, but they can become essential mini-ecosystems. Installing native plants or drought-resistant species creates habitats for insects, birds, and pollinators.
Drought resistant, durable and low maintenance plant species are recommended for extensive green roofs. However, almost infinite plant selection is used for intensive green roofs.
Physiological approaches can improve green roof plant selection, and shrubs with high drought tolerance and conservative water use under water-deficit should perform well. The water potential at turgor loss point (tlp) has been used to predict drought resistance.
Drought-resistant planting. What is the Urban Heat Island Effect?One of the best choices from the Covergreen range for drought-resistant planting is the Delosperma cooperi (also known as the Ice Plant). This plant is renowned for its hardiness and striking purple flowers.
... These shallow green roofs require planting with drought-resistant species that can also withstand severe heat and wind exposure, particularly in hot and dry climates (Beecham et al. 2019;Leotta, Toscano, and Romano 2023). However, for plants to effectively reduce green roof...
Drought Resistance.Drought Resistant Plant : These plants will not need to be hand watered in normal climates, and will only need to be watered occasionally in extremely dry climates once they are established.
