Landscaping is a critical element to improve both the function and appearance of stormwater best management practices (BMPs). This Appendix provides landscaping criteria and plant selection guidance for effective stormwater BMPs.
The first section, A.1, outlines general guidance that should be considered when landscaping any stormwater practice. Section A.2 then presents more specific guidance on landscaping criteria and plant selection for individual BMP designs. These include:
• Stormwater ponds and wetlands
• Infiltration and sand filter practices
• Open Channels
• Filter Strips and Buffers
In Section A.3, key factors in selecting plant material for stormwater landscaping are reviewed, including hardiness zones, physiographic regions, hydrologic zones, and cultural factors. Section A.4 contains a detailed plant list of native woody and herbaceous species that can be used when preparing a stormwater planting plan.
This manual encourages the use of native plants in stormwater management facilities. Native plants are defined as those species which evolved naturally to live in this region. Practically speaking, this refers to those species which lived in Maryland before Europeans explored and settled in America.