Blackberries tend to grow best in either full sunlight or partial shade. It is important that if you are going to be growing these berries that you not give them too much shade, because they do require quite a bit of sunlight in order to do well in the soil.
You will find that blackberry plants prefer sandy and clay soils and that they have to be drained thoroughly in order for them to grow properly. Blackberry plants also prefer soils that are neutral or basic, in other words alkaline, when it comes to the acidity content.
It is important for you to keep in mind all of these things when growing blackberry plants.