The one you want is artemisia dracunculus, french tarragon, not A. Dracunculus inodora, which is Russian tarragon,if you buy at the garden centre. I imagine what supermarkets sell will be the French one, but I've never bought it (hate tarragon). Needs protection from both frost and winter wet outdoors if you want to keep it year on year.

And there's rarely such a thing as a stupid question. Never be afraid to ask anything. We all started somewhere, and the more you learn about plants, the more you realise you have to learn. There are many 'experts' out there, and if they tell you they are, ignore them. Instead, find someone who knows!
ps Don't ask me about bedding plants!

I should have picked up on your 'stupid' remark, but I was on my tablet and its much harder to respond on that, so I'll echo Worthy's response. And don't ask me about veg growing!

lol thanks for your help. Going out tomorrow to see if I can find any Tarragon. Least I know what I'm looking for now :-)

hi.yes tarragan is a perernial.i bought one(french) they have much more flavour than the russian one. great for bearnaise sauce.overwintered it in the coldglass house. you should get small young plants coming up from the parent one, which you can cut and grow on as seperate plants. can,t normally not grown from seed.good luck with same