[Silkworm]

Evening all,
Can any of you please advise on how best to grow Josta berries, bush, cordons, or other and the advantages ?

Thanks in advance.

Silky

[mumofstig]

John's advice:

Fruit is borne on wood that is one, two or more years old. 

 Bushes should be pruned to create an open framework of upright branches. About half of the new growth each year should be removed, and any older, less productive branches or those growing at odd angles should be cut out cleanly just above ground level.

http://www.allotment-garden.org/grow-your-own/jostaberry.php

Mine is a bush as it seemed to me, that continual pruning, as for a cordon would remove the fruiting wood.

[sunshineband]

Mine is a bush too. It grows more like a blackcurrant than a gooseberry, and so is probably not great as a cordon really, as MoS says

[Silkworm]

Thank you for your answers, looks like bushes they will be.