Issai Hardy Kiwi (Self-Pollinating)
Issai Hardy Kiwi (Self-Pollinating)
Species: Actinidia arguta
History: Issai* hardy kiwi originated in Japan and is popular since it is a self-pollinating variety.
Why We Grow It: An exceptionally sweet variety, with around 20% natural sugars. Hardy kiwis have smooth, edible skin (unlike their more common southern counterparts). No need to peel these emerald treats, enjoy as they are! This vine reaches 12-20' long, so be prepared to trellis up to 80lbs of fruit per year. While this variety is self-pollinating and delicious, one downside is it is prone to break buds early in spring, and the new shoots are tender; if your plant has begun growing and a heavy frost is expected, it's best to wrap in burlap/tarps/old sheets.
Interested in some more in depth info? Check out this article from the Maine Organic Gardeners and Farmers Association.
*Although without the Japanese characters it is uncertain what the English translation is supposed to be, it is possible the name 'issai' here comes from the Japanese word for 'everything/all/absolutely.'
Fruit Specs
Fruit Specs
Recommended Use: Fresh eating, juice, cooking, baking
Fruit Size:
Storage: Keeps up to two months in the fridge if picked before ripe
Harvest: September - Mid
Growing Specs
Growing Specs
Canadian Hardiness Zone: 4
Soil Preference: Prefers well-drained soil, and average to moist conditions. Does not tolerate wet conditions but is drought tolerant.
Flowering Time:
Bloom Colour:
Pollination Requirements: Self-pollinating, this variety will produce fruit without a male plant like Meader but will produce more and better fruit if one is present. Hardy kiwis and Arctic kiwis do not cross-pollinate.
Sun/Shade Requirements:
Full Sun or Partial Shade (approx. 6-10 hours of sun daily)
General Growth Habits:
Vine grows 12-20ft long, vigorous with a compact growth habit, generally hardy but new shoots susceptible to frost damage, produces fairly large crops. Generally disease resistant.
Shipping vs. Pick Up
Shipping vs. Pick Up
CLICK HERE to see how shipping compares to pick up.
Shipping: Every year we ship thousands of trees across Canada (except BC due to CFIA regulations). We carefully bag roots in damp sawdust, then box them and send them out via courrier. CLICK HERE to see our shipping policy.
Pick-up: We also have thousands of trees picked up from our nursery each year. The pick-up options is free, though you must wait until you have been emailed a confirmation that your order is ready to pick up, which will have further information such as hours, locations, etc. We really appreciate if you can make an appointment to pick up, then we can be as organized as possible during our busy season.
Size at Purchase
Size at Purchase
Arctic and Hardy Kiwis are divided into the following grades:
- 1 year plant - pruned to ~15cm
- 2 year plant - pruned to ~30cm, extensive roots
- 3 year plant - pruned to ~45cm, extensive roots
There is some overlap in size since we are also taking the age of the plants into account. Some older plants may not have put on quite as much vegetative growth but will have larger root systems.
Unless specified, heights exclude the roots since seedlings and some berries will often have a lot of root growth but relatively little vegetative growth (ex. our Shagbark Hickories seedlings are often 5-15cm above the soil but will have roots that reach 20cm+ in length).
Not all of our berries and seedlings will be available in all of these grades since growth rate can vary significantly across species and even varieties. While we remain competitive in our plant size, it's also worth noting we don't use synthetic chemicals to push vegetative growth, therefore you may find conventional nursery stock larger in some instances comparatively.