Definition - What does Rain Barrel mean?
In botany, a rain barrel refers to an irrigation system that collects and stores rainwater runoff through a drain (gutter) system. Rainwater storage tanks can store between 30 and 100 gallons of water. They are commonly made of wood or plastic. This tank is placed directly underneath the downspout to ensure that rainwater rolls off the roof and directly into the storage unit.
MaximumYield explains Rain Barrel
In some cases, gardeners may need to elevate the barrel to prevent spillage. A rainwater diverter might also be required if the down sprout is not positioned directly above the tank. As far as gardening is concerned, rain barrel water is generally considered an excellent irrigation system since rain water has been shown to be far better for the plants.
Indeed, unlike tap water, rain water is devoid of chemicals, calcium, lime, fluoride, and chlorine among other things commonly found in tap water. Consequently, it provides a far gentler hydrating system to fruits, vegetables, flowers and various other types of plants. It should be noted that for the highest quality of water possible that you ensure your roof and gutters aren't contaminated with any harsh paints or products that could continuously leach into the rain water.
Rain barrels are often recommended for small-scale home gardeners because they are economical and eco-friendly. Rain barrels are also popular options in areas that are prone to droughts. As far as maintenance is concerned, it is advisable to store the barrel in a shady area to prevent algae growth. For this reason, it is also best to go for darker-colored tanks.