Council Bluffs rises from the Missouri River floodplain into the rolling Loess Hills, creating a landscape where slopes, drainage, and sun exposure shift considerably from block to block. The city's native silt loam is fertile but compacts easily under rainfall and foot traffic, making quality mulch essential for maintaining healthy bed structure through the growing season. Hillside properties near the Golden Spike Monument contend with persistent erosion, while flatter yards near Gretna and Ralston tend to hold spring moisture longer than expected. Zone 5b winters are cold enough to heave roots and damage unprotected beds, so residents across Council Bluffs and nearby Plattsmouth rely on bulk landscape materials to keep their yards performing from the April thaw through October frost.