Share your heartnut experiences on this thread.
Grafting heartnuts requires a lot of heat. Wait till you know for certain you’re at 75 F / 24 C and then do it. You want the forecast to stay at/above those temps. As a skilled grafter you will get the best number of successful grafts using the 3-flap or 4-flap aka “Banana Graft” method, or, the bark graft method & 50% is on a great year.
As a rootstock, black walnut is commonly used and I recommend it, but also seedling heartnut should be explored. Try not using Carpathian/Persian/English/Juglans regia (seedling rootstock) due to its inability of continuing growth sometime mid-summer-ish/later. The same thing that Shagbark hickory does btw, which will impact nut size and kernel /size maturity at harvest, annually.
These are my notes from Fall 2019 on cultivars. Only two not-named (yet) cultivars held their sweet and smooth flavor after two months of open air drying. One is a seedling of ‘Stealth’ named ‘Killdeer’ for the speckles on the husk that reminded him of Killdeer bird eggs and the shape of the husk to a Killdeer’s egg; and the other ‘Pearl’.
You will find Killdeer for sale upcoming from Grimo Nut Tree Nursery. I’m not sure the future of Pearl.
Heartnut: Juglans ailantifolia var. cordiformis ‘Killdeer’ (Origin: Fred Blankenship. USA. Seedling of ‘Stealth’)
Heartnut: Julans ailantifolia var. cordiformis ‘Pearl’ (Origin: Fred Blankenship. USA. Improved Seed)
Heartnut: Juglans ailantifolia var. cordiformis 'Simcoe’
Time after time Simcoe did not crack well when tapped side to side along the suture with a mason’s hammer. Heartnuts will make a popping sound when the seam separates and you can easily open them with a fingernail or pocket knife.
Simcoe heartnut
Simcoe heartnut
Simcoe heartnut
Heartnut: Juglans ailantifolia var. cordiformis 'Locket’
Heartnut: Juglans ailantifolia var. cordiformis 'Adelphia’
I had a lot of problems with Adelphia. It’s a poor cracker.
Heartnut: Juglans ailantifolia var. cordiformis 'Adelphia’
Heartnut: Juglans ailantifolia var. cordiformis 'Adelphia’
Heartnut Evaluation 2019
Killdeer 11-14-2019 from 9-19-2019 (period dried)
Kernel: light tan/white
Flavor: excellent, smooth.
Cracking: A
Kernel Extraction: A
Pearl 11-14-2019 from 9-19-2019 (period dried)
Flavor: a bit sweeter than Killdeer. doesn’t have the black walnut taste of ‘Locket’.
Kernel: light tan/white
Cracking: A
Kernel Extraction: A
Locket 11-14-2019 from 9-19-2019 (period dried)
Flavor: not very good after 2-plus months dried.
Kernel: (1/2) got stuck and broke when tried prying
Flavor of 2nd nut tried: bland and not very good.
Adelphia 11-14-2019 from 9-19-2019 (period dried)
Flavor: held very little flavor but didn’t go toward astringent. Still, not something I’d want a 2nd of.
Cracking: F Fail 2 of 3
Kernels: doesn’t matter if won’t release. (shells shatter & break uneven)
MORE CULTIVARS
Heartnut: Juglans ailantifolia var. cordiformis 'Stealth’
Heartnut: Juglans ailantifolia var. cordiformis 'Campbell CW-1’
Heartnut: Juglans ailantifolia var. cordiformis ‘Simcoe’ formerly 'Simcoe 8-2’
Heartnut: Juglans ailantifolia var. cordiformis 'Imshu’
Heartnut: Juglans ailantifolia var. cordiformis 'Imshu’
Heartnut: Juglans ailantifolia var. cordiformis 'Locket’
Heartnut: Juglans ailantifolia var. cordiformis 'Fodermaier’
Dax