Pete you want to contact Kiwibob in Seattle, he is the KING of the kiwi. I saw his amazing gold ones still green on the vines, but he got it down on how to grow them. He is a super nice guy also. as to Hirts', I did not experience badly. I ordered from Amazon, and when plant never arrived I contacted them..and found great service. it turned out I never finalized the purchase Duh! So, I did it again and received a few days later mine little bitty tree. It was small, but it is doing very well, putting new leaves - it is a Hardy Chicago. I have it in a larger pot, inside of a plastic bag with zipper, so it is still getting light and warmth, before I let it rest for the winter. The leaves arrived a bit on the dry side, but have not fallen. It is a cutty!
As to the Kiwi, Bob should help you!