I want some salvia, but haven't a clue where to get any. Its all skunk cannabis round here. 
You can buy dried leaf and extract easily enough online, and a few places sell live plants. All my plants died from a very stubborn aphid and whitefly infestation, but they're quite tough and hung on for months. Just remember that it's not a cannabis analogue, and can't be effectively smoked in a roll-up. It needs to be smoked in a bong or pipe, with the flame held on it while you inhale, since salvinorin A has quite a high vaporisation point. The effects are immediate and intense; the first time I took a hit, I saw woman in my room and mumbled "We didn't know", while thinking that it was 'lady Salvia', although it took a few tries before the words would come out. That was a moderate trip; I had ones where I lost all connection to reality, and a few times where I blacked out and didn't remember the trip, although one time it was in company, and I was told that I'd still been concious and communicative.
