Create a Rain Garden

Plant a Lush Oasis and Stop Polluted Runoff

Storm water running off rooftops, sidewalks, driveways, and streets washes pollutants into nearby streams. As if that weren't bad enough, as storm water rushes over these hard-or impervious-surfaces, it picks up speed and force, causing local flooding and erosion. Impervious surfaces also keep rain water and snowmelt from seeping into the soil and recharging groundwater aquifers.

A rain garden can change all that. Planted in a shallow depression with plants such as ferns, cardinal flower, swamp milkweed, turtlehead and others that don't mind occasional "wet feet," a lush and luxuriant rain garden captures runoff from impervious areas and allows it to seep slowly into the ground. Concerned about mosquitos? Rain gardens are designed to hold standing water for less than 24 hours so that mosquitos can't breed.

Mini Rain Gardens

For situations where you can't have a full-size rain garden, consider a mini-rain garden in a planter. As with a full-size rain garden, use the plants and soil to absorb rainwater from your downspout. Placing them on or in lawn or soil will ensure the water is absorbed into the ground, but even on pavement they will still do some good. Both versions are illustrated in the diagrams below.

This type of mini rain garden can be placed on pavement or on
the grass. Note: there is no down spout connected to this
garden.

This type of mini rain garden is connected to a down spout and
has taller walls to temporarily retain a large volume of water
coming from the roof. Be sure to select plants that can stand wet
or submerged conditions.

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