thanks for the info. i do actually have the ideal soil acidity for blueberry - i tested it a few months back and it was pH 5 - so i was planning to plant those direct in the ground. is it possible to swap round and have the raspberries in pots instead as the soil might not be workable for them? i'll do whichever combination works really in order to get the maximum , and i hadnt thought of mixing pots and ground planting side by side.
i have heavy clay soil also. if it makes any difference, the area we are talking about here is a long thin border - fence behind it and concrete edging in front of it then grass on the other side of the edging. the length is at least 18ft - possibly bigger - and width about 1ft maximum.
if you see this picture here, it shows where i mean (by the way: this photo was taken just before i did a mega clean at the weekend which included getting all that nasty algae off the walls and patio. it looks great now!)
as you can see, i also have some space behind that bench, currently where those 3 viburnums are sitting in those pots next to the rosemary. once those plants are big enough i will be planting those out at the back fence so they can be moved to accommodate fruit plants in pots.
what size pots do you recommend for these fruits?