Made from Terracotta Clay the spikes gradually release water with our plant watering device. The terracotta self- watering spikes will provide a continuous release of water to your plants while you are away. When you place bottle of water in the terracotta stake, the water will slowly soak through the porous clay. Once the dirt around the stake is dry, the water automatically wicks from the clay into the dirt, and the water keeps wicking out into the soil until the soil is saturated with water. Designed to use with Recyclable Bottles: Simply dig a hole in the soil. Gently,...