The most popular variety of A. arguta is called ‘Ananasnaya’ (also known as ‘Anna’) and that of A. kolomikta, called ‘Arctic Beauty’, both of which need a male and female to set fruit. A self-fertile variety called ‘Issai,’is also available, although this cultivar has low vine vigor and very small fruit. Does Hardy Kiwi Require Overwintering? The answer really depends on your region and how low temperatures get in your climate. A. arguta will survive at -25 degrees F. (-30 C.) but A. kolomikta will withstand temps down to -40 degrees F. (-40 C.). Both types develop shoots early and may be sensitive to frost, which does not usually kill the plants, but some tip burning will be evident. Spring frosts are of special concern, as the plant may have begun developing buds and young shoots. A subsequent frost will usually render a plant that does not produce fruit. The trunks of young plants are also more susceptible to injury during these spring frosts.
Care Of Hardy Kiwi Over Winter

How to Grow Flowering Kiwi Berries
Because hardy kiwi is needs both male and female plants to bear fruit, grow one male plant for every nine female plants.

The kiwiberry you have is a different species to the usual kiwifruit. It's Actinidia arguta, smaller greener and non fuzzy compared to usual kiwi. I believe Diggers have a self pollinating variety called "Issai".

I purchased some seed of ebay recently and on the description of the product it mentions the need for cold stratification:

"Better germination rates if the seed is given 3 months stratification. Seed germinates in 2 - 3 months at 10�c, stored seed can take longer up to 18 months"

Well, I got my first sprout today from the Hardy kiwi seeds I planted, and it took about 4 months to sprout, it was in the in my test pot of hardy kiwi seeds which I planted about 4 months ago, without cold stratification, but with the whole fruit, as in, I actually planted the 3 whole hardy kiwis in the ground.
I have still not seen anything come up from the pot of just normally planted seeds.
The pot, in which I boiled the seeds 3 seconds has not done anything either, but I only planted those in january.
I also put some seeds in the fridge for 2 weeks and planted those about 2 weeks ago, and so far nothing yet.
I have more in the fridge, which are being stratified longer, both wet and dry.
So far, the only data I have gathered is that planting 3 whole kiwis (not cold stratified nor refrigerated fruit either) has yielded 1 sprout after 4 months.
Well, it was a surprise for me today, I had another sprout come up, but this time it was in the pot which has the seeds that I boiled for 3 seconds, and those were only planted about 4 weeks ago, which is much better than the 4 months, but to know for sure which is better, I'll have to wait until more sprouts come up.
Well, to keep everyone updated on the sprouts, about a month ago I planted my cold stratified seeds that I had in the fridge for 2 months. I now have about 30 little vines that have started growing, and still more keep popping up out of the soil. So after all the different things I tried, cold stratification worked the best, the ones I left in the fridge for just 4 weeks also gave me about 6 or 7 vines. From the boiled batch, I had only 2 come up, and only one has survive, and its probably the biggest one I have, but boiling is definitely not the way to go with this fruit.

Hi all diggers has just released their may catalogue which has both a green and a red kiwi berry. The red will need pollinator.
I tried Kiwiberry for the first time and I loved it, kept most of the fruit in the refrigerator, then planted a few seeds. I guess I got lucky because I didn't dry out the seed, just added them straight from the fruit to the soil on a whim and MANY SPROUTED! Plants are about three inches tall now growing in clusters. I guess I need to thin them out.
Kiwiberry issai are cold temperature fruit that need a cold snap to start there seeds, a time period within a colder temperature, like storing them in the frige. It normaly takes a month for the seed to pop up. (though it is best to get cutting or seedly instead of seeds). The berry is a grape like vine (climbing) that lives for many years, and self-pollianting. They thrive in cold temperatures, handing forst well. Their stems and leaves can be spit if the tempeture changes raperly, becoming week. This can also kill the plant. Protect it from hot days, for they can be bunt by the sun in the hotter climits. They are heavy produce (lot of fruit) so it not unusual to have up to 1000 or so fruit. victoriananursery
i have discovered i have a ACTINIDIA ARGUTA growing in a property i have purchased i don't know if it is male or female can anyone tell me how i can find out.
In Spring, look at what kind of flowers it produces.
It is probably Issai, which is a partially self-fertile female plant.
I found that when I gave my Issai a cane to climb up, it grew much faster. Branches hanging down pendulously stunts growth of hardy kiwifruit as they naturally are a forest vine that want to climb up to the canopy.
daleysfruit
How to grow Hardy Kiwi