Dill is a great plant in butterfly gardens since butterfly larvae feed on dill. Dill does not have any serious pest or disease problems. However, phoma blight, rusty root, and stem rot have been reported. French Tarragon French tarragon, Artemisia dracunculus , originates from southern Europe. Do not confuse it with Russian tarragon, Artemisia dracunculoides.
Russian tarragon is much coarser, has paler leaves, and a more bitter taste.
It is used to flavor vinegar, herbal butter, shellfish, pork, beef, poultry, many vegetables, and rice. Fresh leaves can also be used in salads, tartar sauce, and French dressing. French tarragon is a woody perennial that will grow 2 feet tall. It produces few seeds, and must be propagated by stem cuttings or division. Plant in full sun , and in rich, well-drained soil with a pH of 6.9.