Can be used indoors or outdoors. For INTERIOR use, use as a cachepot, which means you just put your plant in the plastic vase in which it is, directly in the decorative vase, as shown in the photo. Do not plant directly in the decorative vase. When watering your plants, always remove them from the decorative vase first and let any excess water drain completely before putting the plant back into the pot. Due to the nature of the material, excess water can escape. For OUTDOOR use, use the drill to make 2 or 3 ø08-10mm holes on the side of the decorative vase to allow excess water to escape. If you prefer that we do, just let us know when you finalize your purchase :)