I am new to gardening but I just wanted to let you know that I have experimented with a shop bought kiwi fruit.
I sliced it in half and took some of the seeds out of it. I didn't dry them out and placed the seeds directly into a pot of compost and spray watered them every day for 3 weeks on my window sill. After 3 weeks they started to come up through the compost.
I now have about 25 kiwi plants coming up. They are only small at the moment - about an inch and a half high but they look very healthy. I have now put them in my greenhouse. I hope they continue to grow and produce fruit.
The temperature over here is between 65 and 75 farenheight (inside the greenhouse). We are just coming into our summer months so I am hoping they will do well.