There are many kinds. I hope you can find one to grow as it must be expensive to buy them there.Now I am really confused. I have 3 "artemesia" plants that are all very different, all 3 perennials. 2 from nursery(latin species nametag long gone), 1 from a MasterGardener. Photo id in my herbals books do not show the ones I have, one grows 6ft tall in our 20hr sunlight, so taking that into consideration looking for a similar smaller version I am at a loss to verify the medicinal variety.
I bought the Qinghao dry herb here in Manila at $30 for 500 g of it. I doubt I can find a plant, and I doubt I can make it thrive in our climate.