Building and Planting Landscape Berms: A Complete Guide

Berms—gently sloped earth mounds—add dimension, improve drainage, and create planting microclimates. No rigid rules, but proven guidelines ensure natural, functional results.

Construction Best Practices

• Plan for drainage impacts before building
• Length 4–5x height; max height 18–24 inches
• Crescent shapes blend naturally; follow land contours
• Outline with flour/paint/chalk; remove sod
• Add fill (or soil), pack firmly, slope gradually
• Peak off-center; vary slope/height/width
• Tamp thoroughly; water and re-tamp to prevent sinkholes
• Edge with stone/plants to stop erosion

Planting Berms for Year-Round Interest

• Top (drier): Drought-tolerant plants
• Base (moister): Moisture-loving plants
• Aspect matters: South/west = warmer; north/east = cooler
• Emphasize form: vary height, color, texture
• Tall plants on back; shorter on top/sides
• Include small trees/shrubs
• Mulch with shredded wood (resists washout)

Well-designed berms enhance landscapes naturally while solving drainage and planting challenges.