When planting flowers on planters and flower beds, we used it for preventing frost so that leaves do not stick directly to the soil. The weight of the stone will not be blown off even by the strong wind of the other day, so whiteness is beautiful white so the color of the flower will shine beautifully. Is it suitable for defrosting? I think that flowers and leaves became healthy after stone was pulled. We can also prevent rebounding of soil when raising water is useful.