[hubballi]

As I am limited for space in my garden, my raised beds are constantly being used as my winter brassicas are now planted.

 The question is, how do I prepare the bed with compost and manure ready for the next season if they are being used all the time ? Should I just dig in compost out of the garden bin when I plant my next crop ?

[Yorkie]

This current thread on a very similar theme may help

http://chat.allotment-garden.org/index.php?topic=43985.0

[Elcie]

You could try square foot gardening?  This would mean you prepare one square at a time as it becomes available.