I am in southern middle Tennessee zone 7a and have had Illini Blackberries since 2003⦠I have a 30 ft long bed of them and they produce quite well. Big BlackBerries with true wild blackberry flavor (as the catalog said)⦠except they are 2-3 x as big as the wild blackberries on my place.
4 or 5 years ago I started noticing a problem they were having (thru research, double blossom, rosette ?) but I have kept working with them, taking good care of them, pruning off infected parts, and even though they still have that, and it does affect production some⦠I still got a HUGE harvest of great berries last year.
But also just in case⦠last year, far across my property and upwind⦠I started a 30 ft bed of Ouachita⦠and they grew like crazy last year. I topped them at 4 ft, and they branched out like crazy. Expecting a good crop of those this year.
In the same location I started a bed of Raspberries too⦠Heritage Red, and Fall Gold⦠and they grew like crazy last year too. I topped them at 4 ft and they branched out nicely too. And last fall we got lots of raspberries off the top 1/3 of the canes. They were both excellent. I like the Red Heritage best, and my wife preferred the Gold⦠the kids loved them all.
I also have a loganberry that I planted spring 2019 (2 plants)⦠and that thing covered a 8x12 trellis and ran off the ends. We got so many berries off it last year (2020)⦠we ate all the fresh berries we wanted for a couple months and still froze lots of pints of berries, that we are still eating this winter.
It is a big purple berry and for me has been a super producer so far.
They have excellent flavor, but are more tart than sweet. I like to eat them mixed with other berries, like blueberries or grapes.
Here in Zone 7a, TN, my first loganberries were getting ripe May 22⦠which is a full month ahead of my Ilinni blackberries (which is nice).
So far I have had no problems with raspberries, or loganberries⦠have had issue with doubleblossom on the illinni blackberries but with some care they are still producing LOTS of great berries.
I have only had the raspberries and loganberry for a short time thoughā¦
Below is what the Loganberry looks like.
PS⦠I think I am going to add some black raspberries this spring. A variety called Jewel is what I am considering.
Best of luck to you.
TNHunter