Groundcover helps to reduce the relative moisture in greenhouses and therefore reduces the risk of the development of moisture-loving diseases (such as grey mold in tomatoes and peppers, blight and leaf mold in tomatoes, and more). Covering the ground helps to save 20-30 percent of the water and fertilizer given to the crop and prevents the sprouting of unwanted weeds. However, groundcover makes it very difficult for the plants to become established, especially when the daytime temperatures are comparatively high due to excessive heat and water in the soil and in greenhouses with groundcover, the prevalence of Pythium is much higher. Therefore, the decision of whether to use groundcover depends on the circumstances. If you are concerned about the appearance of leaf diseases, if it is difficult for you to control weeds, and if you plant in autumn when the temperatures are lower, it is recommended to use groundcover. If you plant in summer, when it is very hot and you are not concerned about moisture-loving diseases because you are in a relatively dry region (Arava), there is no benefit to using groundcover.