Sadepuutarhojen

Sadepuutarhojen, also known as rain gardens, are specially designed landscaped areas that help manage stormwater runoff. They are typically planted with native vegetation that is adapted to both wet and dry conditions. The primary purpose of a rain garden is to capture and absorb rainwater from impervious surfaces like roofs, driveways, and patios. This runoff often carries pollutants such as oil, grease, fertilizers, and sediment into local waterways.

By infiltrating the stormwater into the ground, rain gardens reduce the volume and speed of runoff, which helps to prevent flooding and erosion. The plants and soil in a rain garden act as natural filters, removing many of the pollutants before the water reaches streams, rivers, or lakes. This process improves water quality and protects aquatic ecosystems.

The design of a rain garden can vary, but generally involves a shallow depression in the landscape. The soil composition is often amended with sand and compost to enhance drainage and aeration. The selection of plant species is crucial, as they must be able to tolerate periods of inundation as well as drought. Common choices include various sedges, rushes, wildflowers, and small shrubs.

Rain gardens are an effective and aesthetically pleasing method of stormwater management that can be implemented in residential, commercial, and public spaces. They contribute to environmental sustainability by reducing pollution and conserving water resources.