Answer: French Tarragon, (Artemesia dracunculus) is a perennial hardy to zone 4 so you should be able to grow it. It prefers a location in full to part sun with good air circulation. Grow it in a rich but very well drained, even somewhat sandy, soil with a pH close to 6.9. The plant may reach about two feet high and wide. French tarragon is grown from cuttings, so you must start with a plant rather than seeds.
Richter's Herbs offers single plants, or a "plug" tray. You can reach them at ph. 905-640-6677 or, visit the website at http://www.richters.com.
Q&A Library Searching Tips