paradoxlost
Member
I don't have Black berry's where I am at, but find areas with berries are generally good. A quick google search and I find this for Black berry.
Site Selection for Blackberry Bushes
Light: Full Sun
Soil: Prefer acidic to slightly basic (6.0-7.0), well-drained, organic soil. However, they adapt to most soil types except alkaline and wet. If you have clay soil, you will need to amend with organic matter. To increase the soil's organic content, amend with organic mulch-wet peat moss, well-aged sawdust, straw or leaf litter.
Sounds like a good match to me.
I have found places with nettles are usually really good, although can be a bit wet. Watch out they can cause irritation of the skin. I don't know if you have them there?
https://depts.washington.edu/propplnt/Plants/Urtica dioica.htm
Also adding gypsum like Easy7 said would help. It is cheap and you don't need to bring a 50 lb bag in at one time. Bring a few pounds each time you go.
I well researched spot is hard to find and takes a lot of work. Once found prepare it like you will be using it for several years to come, as you very well might be. It will get better every year.
Peace GG
I don't know if its the same for blackberries, but as far as blue berries go, you don't need to plant them in an acid soil, they prefer pH 5.5 only under certain nutrient conditionss...