Raintree is saying that ‘Black Satin’ is new to their lineup this coming seasons… and that it is hardy to Z4… which i havent seen any other talk about…
Also their description of Celestial which is new to them… isnt for me but may interest someone.
Im not sure if i have read of anyone on here growing Canby… almost never discussed any more on my other groups… good choice i think if you are into spineless/thornless for kids and yourself.
I feel you’re rightfully suspicious. Last winter I had a Black Satin blackberry plant from Lowes in a 7gal nursery container inside my unheated garage with a thin layer of mulch and the lowest temperature we saw was close to 1F in zone 6b. All the canes died back to the soil level. The canes which grew back were trailing though, not semi-erect.
Also found this description of Ollalie from the DWN website-
True or false? I have no idea… as most folks in Z4 probably would never think to try growing Ollalie.
one green world and grow organic list it as z 6-9 hardy.
Trees of Antiquity says Z5
Bay Laurel says Z4
I think 6A myself is the limit with its parentage… and i think most nurseries have no real clue of what they sell other than the profit margins… and likely do not care either.
picked up an ohio treasure today. it was only 6 bucks at my local nursery sicn theyre closing. figured hey, why not some late season black raspberries
The Black Satin blackberries I grew 20 or so years ago were not short or plump, but formed long, erect primocanes and had berries long-ish and slender, not unlike Columbia Star. Black Satin tends to stay tart even when ripe but is excellent in baked goods.
I grow Meeker rather than Canby, but I grew up in Canby, that should count for something.
Bred by the same guy who bred Josephine, Caroline and most of the names of ladies that sound similar 
Ohio’s Treasure has red raspberry in its breeding…
And Josephine has black raspberry in its breeding.
Its not really that ‘late bearing’… but does ripen its pcanes in the heat of august and sept and sometimes into Oct… ymmv on climate year to year though.
I hope it makes a comeback… it comes from an excellent breeder and is somewhat unique with its red raspberry lineage and one of the few ‘bred’ black raspberries.
ah yes i meant late as in has a primocane crop. didnt know it had red raspberry in it but that does explain its phenotype a little, it has a certain raspberryness to it, the brown fuzzy stem. I assume thatsh ow they got it to bear on primocanes?
They also had black delicious there
Souris Red Raspberry is now available from St Lawrence… ive not seen it mentioned in the US before myself. Popular in Canada.
Why call it souris if sweeter 
lol
I think Souris is a town in Manitoba?
The vigor of these raspberry hybrids is something I just can’t get over.
That same plant is now a good 32" tall.
Almost a foot of growth each month on average.
The compound leaves are chonky too.
Will very likely be mostly sterile, but I’ve a few dozen seedlings which increases the chances of a fertile one, and I’ll backcross the partially fertile ones, hopefully this spring if I can get them to bloom early.
The leaves of each parent for comparison
Mysore
Prickles are more European raspberry like, but larger. I’m glad they aren’t thorny though like on Mysore, I much prefer prickles over thorns. Will probably try to breed some thornless lines eventually but it’s not a priority, I’ve too many deer and mockingbirds for thornless brambles.
I had been hoping the white stems would be a dominant trait, but it’s not.
I’ve noticed an almost perfect 50/50 distribution of small “suckers” pre-forming from the axillary buds, so that one is for sure a dominant trait from Mysore.
With
It’s one I’ll try to select for since the shrubby growth is a plus both from a management and likely from a productivity standpoint.
I need to uppot my Mysores. The remaining 2 have survived that first 6 months where plants just like to die, so I need to get them in something bigger so they can grow out.
I will say, my Mysore berries aren’t much to write home about. Nice flavor and some sweetness, but very small and very seedy.
But otherwise they are great plants.
My raspberry choices are very limited down here unfortunately. I still plan on getting Tayberries, Loganberries and Boysenberries, and Bababerry seems interesting. I might be moving soonish (within 2 years pontentially, but its not set in stone), so I am binding my time with “better in-ground” plants and just sticking with the plants I have from seed.
Of these three, so far Bababerry seems to be the most reliable surprisingly, but it’s not a big lead. I don’t think any of them will make it long term even for me, but I just need them long enough to make some crosses. If I get some extra suckers I can send you some Bababerry in the spring (the other two don’t sucker much, same with Mysore).
