The Effect of Irrigation Treatment on the Growth of Lavender Species in an Extensive Green Roof System

Urban Farm DB summary

This study investigated the effect of irrigation amount on the growth of four lavender species (Lavandula angustifolia, Lavandula dentata var. candicans, Lavandula dentata var. dentata, and Lavandula stoechas) in an extensive green roof system. Two irrigation treatments (high and low), determined by substrate hydraulic properties, were applied, and plant growth was measured. The results consistently showed that low irrigation reduced plant growth. However, with the exception of L. stoechas, the appearance of plants under low irrigation was satisfactory, supporting their use with reduced water.