With set-it-and-forget-it convenience, this Click and Grow Smart Garden expertly monitors the health, growth, and life cycle of your plants. Built-in sensors and innovative Smart Soil let the garden know when to automatically deliver an optimal amount of water, oxygen, or nutrients. Just plug it in, add water, and watch your plants thrive. Got it as gift. Used it once, still in its original package. Fun but Gardening is really not my thing. You can get refill packs online or From Bestbuy.