Louisiana Landscape Horticulture Practice Exam 2025 – Complete Study Resource

Implementing a rain garden provides significant benefits, primarily through its ability to reduce flooding and promote infiltration. A rain garden is designed to temporarily hold and absorb rainwater runoff from impervious surfaces such as roofs, driveways, and roads. This feature aids in the management of stormwater, allowing it to soak into the ground rather than overwhelming drainage systems or flowing directly into streams and rivers.

By facilitating the natural infiltration of water, rain gardens can significantly lower the risk of localized flooding during heavy rains. They also contribute to improved water quality by filtering pollutants and sediments before they enter the waterways. Additionally, the plants used in rain gardens are typically native species that thrive in wet conditions, which helps create a sustainable ecosystem while enhancing the garden's functionality.

While aesthetic improvement is an important aspect of landscaping, the primary function of a rain garden centers on stormwater management and promoting groundwater recharge, establishing the clear advantage of reducing flooding and enhancing overall water management.