Automatic watering system for indoor potted plantsWater soluble fertilizer delivery system, automatic plant fertilizer and feederEasy to use vacation watering for outdoor and indoor plantsKeeps your plants healthy with our just-in-time watering principle based on capillary actionWork it is a simple, effective method for keeping your plants watered, without your constant attentionProduct works by automatic capillary action, drawing water from a nearby container when the surrounding soil dries, compared to the ceramic spikeSpike replenishes the moisture at the same rate your plant draws it from the soil, thereby maintaining an optimal moisture levelNo more over-watering or under-wateringEasy setup, perfect for vacation plant wateringSaves time with our self watering system when you are too busy to tend to your plantsRecommend 1 spike for a 6-inch pot and 3 spikes or more for a 12-inch pot