According to EdibleContainerGardening.com, tomato seeds and seedlings grow well indoors--including in a garage--if their basic conditions of water, temperature, moisture, and light are met. Place the seeds in a sunny window or hang a grow light above the seeds and leave it on during daylight hours.
About this Author
Cyn Vela is a freelance writer and professional blogger. Her work has been published on dozens of websites, as well as in local print publications. Vela's articles usually focus on where her passions lie: writing, web development, blogging, parenting, gardening, and health and wellness. She studied English literature at Del Mar College, and at the University of Texas at San Antonio.