While you won't be able to seed tarragon, you can grow it from divisions and cuttings, or purchase a young plant at the local nursery. Tarragon (Artemisia dracunculus) is a regular addition to French food. This licorice-flavored herb has a decidedly strong punch and is a mainstay for the herbal gardener. Take care to distinguish that you are growing French tarragon, since the Russian variety lacks the flavor and tone of the French species.
Hardy in zones five to nine, tarragon should be planted two feet apart in a location that receives full sun. Tarragon does not fare well in the high temperatures, however. If summer temperatures are over 90 degrees, plant tarragon where it will receive partial shade. The herb loves to be watered but will not tolerate boggy soil or standing water. Make sure the soil drains well and becomes dry between watering. The soil's pH should be between 6.5 to 7.5, and rich with organic material. If you choose to grow tarragon indoors, plant it in a small container that is filled with potting soil and large rocks covering the drainage holes. Put the container close to a window so the plant receives at least six hours of full sun daily. Tarragon does not need to be fertilized.
Tarragon is a perennial that will over-winter with proper care. Cover outdoor plants with plastic or other barriers to protect them from snow and freezing temperatures. Mulching with hay or straw to three inches thick also keeps the plants safe.
You can propagate tarragon; in fact, that's typically how new plants are started. In the spring, dig up portions of the mother plant's roots and find areas that are growing new tips. Take care as you cut because tarragon roots break easily. Cut and divide the root so there are at least three new sections to plant. Plant the cuttings immediately.