Plants need sunlight to photosynthesise and need to photosynthesise to survive. Without adequate sunlight, a plant will grow tall and spindly. If there is enough energy to grow leaves, they still may not totally expand. And without enough light, don’t expect any flowers or fruits on them. All vegetable plants and most flowers require large amounts of sunlight. In the Soil or on your Easygro Stele, plants need at least 8 to 10 hours of direct sunlight every day to grow well and produce fruits & flowers. Artificial lighting is a poor substitute for sunshine, as most indoor lights do not provide enough intensity to produce a crop.