A greenhouse in three sizes for nature’s smallest flowers, and a nursery for the plant’s first stages of life. Use the Small Grow for seeds or cuttings. The Large model is for single small plants. And the Extra Large can be used for small groups of plants. Caroline Wetterling’s Grow is made of two glass parts. The bottom part holds the soil and the plant. The top part is a lid equipped with a spout, allowing it to be used as a watering can. It also functions as a valve that lets in air and regulates the moisture and temperature levels inside the greenhouse.