Hey, Sharon, if you want to grow and disguise it, plant it among some little chaste trees.
http://www.johnstonplants.com/... I can't tell you how many people have walked into my yard and asked in conspiratorial whispers, "What are you growing here?"
About the tarragon: I planted some Fr. tarragon in a big hanging container early last year. It was under the patio cover but got a little morning sun. Come summer, it turned to toast - along with every other herb except basil.