Growing vegetables in boxes requires choosing varieties suited to container gardening. Select petite varieties and ensure that root vegetables will fit your box gardening ideals. With proper water, fertilization and sunlight, your boxed vegetable garden should provide you with plenty of healthy eating.
Choose your vegetable seeds carefully, selecting varieties intended for container growing such as petite varieties of tomatoes, cucumbers, carrots and peppers.
Start your vegetable seeds in a flat. Prepare the starter mix according to the manufacturer's instructions, then plant and water your seeds. Overplant slightly, since not all seeds will sprout. You can thin them after they begin growing. Tend carefully, especially at first, as seedlings are fragile.
Transplant your vegetables to permanent box homes after they have grown a few inches high and are stable and healthy. Begin by putting potting soil in the boxes. With the trowel dig holes slightly longer than the root balls that have formed in the flats. Gently squeeze the sides of each segment of the flat to loosen the root balls one by one. Move quickly to plant each seedling in the boxes without exposing the roots to too much air. Cover the root balls thoroughly with soil. Do not bury the seedlings or any of their leaves.
Water your vegetable plants regularly, adding water whenever the top of the soil feels dry. If your boxes do not drain well, drill small holes in the bottom before you put any soil or plants in them. Only do this if you will be placing them outside or in a tray so excess water can run off.
Stake tomatoes, peas and other vine vegetables as needed. Use inexpensive 1/4-inch dowels as stakes.
Fertilize according to your vegetables' needs. Conventional and organic options are available from many manufacturers and in dry and wet forms. In most cases, dilute fertilizers so you do not burn vegetable plants.