Potman's Inbox

Er how many plants?? Seriously I have just had some raspberrys in a large pot 2 ft across by 2ft deep I had no where available to put them and they havent done well at all. Both Rasps and Goosgogs like a cool root run and during the hot spell (yes think back) the rasps did suffer, whereas my rasps in the plot really took off. All of them where watered almost daily during the hot spell (remember?) but the pot grown ones have struggled.

just ensure the pots are big enough for the roots to get sufficient food and water - they will not like drying out. Raspberry canes might do better in a large trough - they are shallow-rooting so it would need to be wide. Mulch well and feed them all through the growing season.

John Innes is 7 parts loam, 3 parts peat and 2 parts sharp sand.
No. 1 is 4ounces J I base fertilizer 3/4 of an ounce chalk or lime to 1 bushell.
No. 2 is 8 ounces base, 1 and a half ounces of chalk.
No. 3 is 12 ounces base, 2 and a quarter ounces of chalk.
If I were you I would add 4 ounces Hoof/Horn or bone meal to each bag of no. 2.
If you have some OLD mortar rubble or plaster add 1 4inch pot to each bag.
Hope these details will be of some help in the future as well.