Great observations! Allow me to explain each point:
1.)Navaho I purchased from several nurseries. This one in comparison is definitely Bigger and Earlier than the rest, I acknowledge that it may not be the UK version…
2.) If you look at the patents for Hall’s Beauty and Ponca they are giving dates for their respective testing locations - (west coast for Hall’s Beauty) whereas University of Arkansas is giving the ripening dates for their location in the east.
The ripening dates are dependent on location and this can give even google AI some confusion. But, yes, what I have documented is correct. Hall’s Beauty (a trailing) is before Ponca (erect).
I have four plants of each cultivar in different locations around my property.
I purchased two Hall’s Beauty from One Green World and two from Burpees. As for my Poncas, I purchased from Bottoms Nursery, Restoring Eden Nursery, Ison’s nursery, and Berries Unlimited.
Here’s proof that I grow both:
My Ponca photo taken today December 21, 2025.
My Hall’s Beauty taken today also. (I’ll try to take photo the coming season of their beautiful blooms.)
3.) Osage having immunity to Orange Rust is incorrect. I noticed it also in their patents. Nevertheless, I had to remove six plants which I purchased from two sources. Just Fruits and Exotics was one source. I like this nursery very much, but as always, I try to get stock from more than one source. I planted three in one location and three in another and ALL got severe Orange Rust coverage. University of Arkansas may not have observed it in their trials (which they spray), but I did. Sorry, I do not have photos to verify so believe what you will. I say this with the appreciation that you are challenging what I wrote. I sincerely appreciate people who fact check, and I wish that this were practiced by more people. So, thank you for these questions.
Sincerely.
PS: I read your excellent comments on Blackberries, Raspberries and Hybrids
You have an extensive knowledge on Blackberries and I was hoping to find a source for two specific cultivars that I want to test here:
1.) Siskiyou
2.) Black Pearl
I chose these because they seem to satisfy the following conditions:
1.)Early (May - Early June for my area in North Georgia)
2.)Greater than 6 grams on average
3.)Reasonably resistant to disease / fungal pressure.
4.)More on the sweeter end of the spectrum (I prefer >10% soluble solids and Ph of 3.3-3.5)
If you can provide a reliable source, I would be grateful. I will gladly pay for the plants and shipping but I can not find a seller.