A water-absorbing geocomposite is a spatial structure used to retain water in the soil so that it is later available to plants. It consists, among others, of a casing fabric and a water-retaining polymer superabsorbent. The retained water is then taken up through the plant roots. When it rains, the geocomposite water storage will be replenished. The developed technology breaks the barrier of the practical application of polymer superabsorbents in the soil, which has been directly introduced into the soil and did not bring the expected results. This technology allows to reduce water consumption by up to 50 percent, contributes to increasing the biomass of cultivated plants and improving the development of their root system. The developed geocomposite can be used to cultivate berry plants, urban greenery in the construction of green roofs or on the slopes of flood embankments, increasing their safety. Thanks to the developed solution, plants are more resistant to drought, and water consumption can be significantly reduced in their cultivation.