Herbs may be grown indoors as long as they get sufficient light, water and nutrients. Most herbs do well in pots or containers, and their growth can be controlled though clipping and pruning. Use a potting mix for herbal seedlings or cuttings and add a weak compost tea to the potting mix when they are planted. Some herbs do well indoors, including basil, oregano, thyme, sage and rosemary. Mint does well, as does tarragon, marjoram and chives.
Pick a location for the herb garden that has southern and western exposure and the strongest and warmest light. Invest in a grow light if neither of those is availalble.
Plant herbs in small, clay pots for a windowsill garden, which offers limited space. Place one herb seedling or cutting per pot. Devote one corner of a room that offers six hours of sunlight a day. Plant two to three seedlings or cuttings per pot in larger containers.
Place saucers for large and small pots on the windowsill to prevent water damage from drainage. Position the garden on a tiled section of flooring to avoid damage to the floor. Place a vinyl tablecloth under the pots if tiled flooring isn't an option.
Mist the plants lightly with a spray bottle each morning with clean water. Do not wet the leaves or soak the soil.
Check the soil daily for watering needs. Push a finger into the soil at the edge of the pot up to the second knuckle. Water the plant if the soil feels dry. Add water until it seeps into the saucer under the pot.
Add a weak compost tea (1/4 cup of compost to 1 gallon of water and stir to dissolve) for fertilizer once a month. Add the fertilizer once every six weeks if the plants are doing well. Pour no more than 1 or 2 tsp. onto the soil for small plants and 1/4 cup for larger plants.
Rotate each pot a quarter turn every two to three weeks to ensure even exposure and growth.
Check plants frequently for signs of distress, as wilt or slow growth suggests the plant may be root-bound. Prune carefully, taking several clippings. Replant the into a bigger pot if the plant does not revive.
Take clippings frequently to control the herbs' growth.