Ensure your outdoor plants always get the nourishment they deserve with our self-watering planter reservoirs. Known as a Planter Well - these handy gadgets release enough water to keep your plants nurtured and stable throughout the springtime. They work to irrigate 9-inches of soil in every direction, reaching down deep to nourish seeds and thirsty roots. And, while these planter reservoirs are nifty and effective when it comes to creating a self-watering garden, they are also accommodating - as each reservoir can be used in either a traditional planter or hanging basket. In addition - you have the customizable option of adding a unique water-fill tube.