Too much light? Indoors, too much light is typically a concern for plants kept in a south or southwest facing window. Artificial lights that are kept too close to plants or left on for too long can also cause stress. If your plants are beginning to display spots on the leaves that are pale or faded this could be symptoms of excessive light.
If low light is a problem for your indoor growing, check out the video of the week for a grow light you can easily make for your home. If you plan to start seeds indoors, grow lights may be necessary to ensure seedlings receive enough hours of light at the right intensity. (Cynthia Domenghini)