Special designed and engineered soil mixes are often used to meet the challenging requirements posed by unique landscape designs. By combining Utelite E-Soil® products with sand, soil, organic materials or other related soil products, customized soil mixes with optimum soil characteristics and properties can be achieved. Designer soils are often called for when designing large planters and containers, plantings on structures, rain gardens, specialty gardens, athletic fields, urban tree plantings and rooftop gardens.