There isn’t a large cash outlay required when planting a market garden. The space will have to be tilled. For small plots for greens, flowers or herbs, this can be done with a spade and some time. For larger plots, hiring a local farmer or renting a rototiller the first year is much better than buying a tractor.
Standard garden tools can be found at any hardware or big box store. A spade, a hoe and a hard rake to work the soil as well as a small hand-trowel for transplanting seedlings are the most common tools. A garden hose with a sprinkler attachment rounds out the necessary items.
If planning far enough ahead, it is possible to buy seeds and start them indoors six to eight weeks before the last frost. In the case of tomatoes, the cost of buying seeds and starting supplies is much less than buying bedding plants at the greenhouse.
There are several long-standing reputable seed companies that will send a free catalog. Please see the resources for links.