Summarize this article in one sentence.
Annual plants only bloom for 1 season and include herbs such as anise, dill, coriander, basil, and chervil. Perennial plants come back each season, such as herbs like mint, tarragon, fennel, and chives. You can choose to plant annuals, perennials, or both. Just be sure you know which plants will die off at the end of the season. Using existing plants can provide you with hardier specimens that you can harvest sooner. If you choose to use existing plants, be sure to inspect them thoroughly before purchasing. Avoid choosing any plants with signs of pests or diseases, such as those that are brown or wilting, have holes or spots on them, or otherwise look unhealthy. Planting herbs from seeds may allow you to grow a wider variety of herbs than choosing starter plants. If you choose to plant seeds, obtain them from a reputable company. Research different providers and read customer reviews to help you make your choice. Make sure the seeds are not discolored, misshapen, or show signs of rot, mold or other issues before planting them. Some herbs don’t transplant well and should be grown from seed, including fennel, cumin, anise, chervil, dill, borage, caraway, parsley, and cilantro/coriander. It’s important that the area in which you plant herbs has good drainage so they don’t become waterlogged. Inspect your soil after heavy rainfall or watering. If puddles or patches of water remain on top of the soil after several hours, your soil is not well-draining.  To amend your existing soil, you can dig up the top 12 inches (30 cm) of soil in the area you will plant the herbs. Mix 25% sand, compost, or peat into the soil, then use the mixture to fill in the area. If you’re planting your herbs in containers and placing them outdoors, select a soil with good drainage, such as one that contains vermiculite or sand. Different herbs require different levels of sun exposure. Refer to the seed package or the label on the plant to find out the requirements, and situate the plants where they will get the recommended amount of exposure. For instance, sage requires full sun, but chervil requires full shade. Some herbs may grow rapidly and need lots of space, while others are smaller and slimmer and can be planted closer together. Read the seed packet or plant label to find out how much space each herb needs. If you’re using containers, choose ones that are larger than 6 inches (15 cm) in diameter so the herbs don’t become too cramped.

Summary:
Decide if you want annuals or perennials. Choose plants without discoloration or holes. Pick seeds free of rot or mold. Select sites with good drainage. Place the herbs in locations that receive the recommended amount of sunlight. Space the plants or seeds as per the package instructions.