Choose Your Herbs
Good choices include basil, cilantro, dill, oregano, rosemary, sage, and thyme. You can start herbs from seed or purchase small plants. Annual herbs are especially easy to start from seed; most perennial herbs take longer to germinate and grow so it's easier to start with plants.
Use individual pots for each plant so you can give each herb the specific care it needs. Be sure containers have drainage holes and waterproof saucers.
Fill Your Container with Potting Mix
If you're starting seeds, use a commercial seed-starting mix, such as Miracle-Gro® Moisture Control Potting Mix, or a 50:50 combination of the two. Avoid using garden soil, which tends to be heavy and may contain disease organisms. Sow seeds, checking the seed packet to determine planting depth.
Tips for Your Windowsill Herb Garden
A sunny, south-facing window is adequate for most herbs, although supplemental fluorescent lights will help in winter.
Don't allow foliage to touch cold windows.
If you want to plant multiple types of herbs in a single container, make sure they have the same cultural requirements.
Learn what conditions each herb prefers. For example, basil prefers warmth, while sage and rosemary like cooler temperatures.