If you've dreamed of planting an herb garden, but you have no gardening space, consider growing herbs indoors from seed. Although smaller in scale, growing herbs indoors is nearly as easy as growing herbs in the garden, but indoor herbs can be used and enjoyed all year round. Like outdoor herbs, herbs grown indoors will require well-drained soil and plenty of sunlight. Plant a few of your favorites, and you'll soon have ready-to-harvest herbs at your fingertips.
Purchase high-quality herb seeds from a reputable dealer. Read the date on the seed packet to be sure the seeds are fresh. Avoid using seeds more than one year old.
Read the seed packet to determine how large the herb plant will be at maturity, and choose a planting container accordingly. Most herbs will do fine in a 6-inch pot, but some, such as sage or rosemary, will require a large pot. Be sure the container has a drainage hole in the bottom.
Put a layer of bark chips or pebbles on the bottom of a planting container. Fill the container with an all-purpose commercial potting mixture mixed with equal parts coarse sand or perlite. Add 1 tsp. of lime for each 6-inch pot.
Plant the herb seeds on the top of the soil, allowing about an inch of space between each seed. Cover the seeds with a layer of potting mixture equal to twice the diameter of the seed.
Keep the soil slightly moist while the seeds are sprouting. After the herbs have sprouted, don't water until the soil feels dry to the touch. The soil should be kept on the dry side, as all herbs will be prone to rot if the soil is kept excessively damp.
Place the container where the herb seeds will be exposed to 12 hours of sunlight every day. If necessary, supplement available light with a grow light. Turn the container weekly so the plant will be evenly exposed to sunlight. Room temperatures should be between 60 and 70 degrees Fahrenheit.
Provide ventilation for the herbs plants. Don't place containers too close together. Herbs will benefit from a fan turned on low speed.
Feed herb plants every other week after the plants are a few inches tall. Use a liquid houseplant fertilizer diluted to half strength. During fall and winter, fertilize only once every month.