The plant water Seeping device is made of high quality terracotta and has a sustainable and steady flow of water. The watering post can water your plants for a week. Size of watering pile: length 7 in. Caliber: 1.78 in Before placing in the pot,dig a hole next to the plant and bury the watering stake in the soil so that the opening is flush with the soil.Empty bottle to take out filled with water put inside,do not push plant watering pile hard,so as not to break Plant watering posts are designed to work with long-necked bottles,any long-necked bottle made of any material is compatible,as long as it fits securely into the watering post, you can use beer or wine bottles this is an environmentally friendly method Plant watering nails should last about 7-10 days per liter of water. It depends on the type of plant, soil composition and moisture. For large plants, a plant watering peg can be placed next to each plant, but be sure to carefully place it in the plant watering post. It is recommended to test the water consumption of the plant watering post before going on holiday. We will take full responsibility for any self watering spikes found damaged upon arrival or during normal use.