You can use plastic buckets barrels or grow bags for containers.
Rain gutter garden soil mix.
This length of time will ensure that mosquitoes will not breed in your rain garden.
To prevent the soil from leaking through the drain holes cut a thin strip of weed fabric and lay it along the bottom of the gutter before adding the soil.
You may need to add compost to lighten the soil if you have heavy soil.
Plants are grown inside of large or small containers and fed water and nutrients from the rain gutter which is maintained by a float valve and connected to a well rain.
Ideally the water from your rain garden should drain within 12 hours or a within 24 hours at the most.
Note that metal rain gutters will eventually rust although you can still use them.
The rain gutters you use for gardening need some preparation first.
This system is relatively inexpensive and easy to build.
Preparing for rain gutter gardening.
Remember that clay soil is not ideal as it inhibits drainage.
It is a low maintenance mass growing system that can grow many large and small crops at once.
A typical soilless potting mix just like what is used for any potted plant works well for a rain gutter planter.
At the core the rain gutter grow system is a self watering container gardening method.
Pvc rain gutters will last indefinitely.