I just hope you have beter luck than me. I recently bought a 10 pack of these seeds...very impressive packaging from THSeeds..a little book looking package..cute. My laughs stopped however when NONE, not ONE, of the seeds sprouted.
I had them in high grade seedling soil, and the Mandala's planted right next to them ALL sprouted and did fine. NOT ONE of the skunk seeds came up. I emailed my seed seller, who said he will give me some freebies next order but that he could not get THSeeds to do anything. I contacted THSeeds directly and told them what happened. They said that because I live in the USA they could do nothing.
So, I will NEVER buy THSeeds products again because they cannot make it right when they screw up. If your seeds are that old, they may actually be viable, but then again thats pretty old. good luck. I have 20 Mandala's blooming now and are sticky and sweet, so to hell with THSeeds.