Garlic grows from cloves separated from the bulb. These cloves easily sprout and grow into new garlic bulbs under the proper conditions. Each developing bulb only takes up a little space, making garlic a suitable choice for an indoor potted garden--providing the proper amount of sunlight is the biggest concern. While not necessary, garlic tends to produce larger bulbs if it experiences a cold period. If you have room outdoors, plant your garlic in fall and store the pots outside until spring. Otherwise, plant the garlic indoors in late winter for a fall crop.
Fill a 12-inch diameter pot with a lightweight, well-draining potting mix. Use a pot that has at least one drainage hole in the bottom and is approximately 10 inches deep.
Break apart the garlic bulb, leaving the papery covering intact on the cloves. Choose the largest cloves for planting, setting aside the smaller ones for use in the kitchen.
Sow the cloves 1 inch deep and space them 3 inches apart in all directions. Plant so the pointed end of each cloves faces up while the flat end is at the bottom.
Water the soil from the top until the excess water begins draining from the bottom of the pot. Water when the top 1/2 to 1 inch of soil begins to feel dry to the touch, approximately once every three to five days for indoor pots.
Place the pot in a window where it receives at least six hours of direct sunlight a day. Alternately, set the pot outside until early spring, then bring it indoors to a brightly lit window.
Fertilize the garlic once a month with a half-strength dilution of a soluble nitrogen-rich plant food. Begin fertilizing once the garlic foliage is 6 to 8 inches tall.