Sturdy, weather- and organic to soil. The self-watering stakes have excellent water permeability as well. Recycle a long-neck wine bottle or plastic bottle. In just 4 steps, you can easily get your plants self watered with the self watering spikes. The plant watering devices can take water directly to instead of watering onto the soil , which makes your plants grow happier and healthier. % With the help of the automatic planter waterer, you plants can get slow release water by themselves, no more over watering or underwatering. The self watering planter insert can automatically and get them hydrated while you are away or just busy, making caring for plants effortlessly. Always remember to test the water speed before vacation. Sturdy, weather- and organic to soil. The self-watering stakes have excellent water permeability as well. Recycle a long-neck wine bottle or plastic bottle. In just 4 steps, you can easily get your plants self watered with the self watering spikes. The plant watering devices can take water directly to instead of watering onto the soil , which makes your plants grow happier and healthier. % With the help of the automatic planter waterer, you plants can get slow release water by themselves, no more over watering or underwatering. The self watering planter insert can automatically and get them hydrated while you are away or just busy, making caring for plants effortlessly. Always remember to test the water speed before vacation. Color: As Shown Material: Ceramics Package Contents: 8*Wine Bottle Watering Spikes Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.