There is no fixed amount of money that is required to start a vegetable garden but you can get a few ranges to help you understand what you will need. Gardening takes time and you could be required to invest some money before you start harvesting. It takes about $300 to set up a small garden bed, and seeds should cost about $30 per year. Miscellaneous costs depend on your site, size of the garden, and plants you want there but they won't require you to spend much unless you want something extraordinary.