Posted: 23/10/2015 at 19:22
Tricky one JS. Brassicas are nitrogen lovers so I would recommend feeding with chcken manure pellets. I would also give the ground a general feed using another organic fertiliser such as fish, blood and bone when you prepare it in the spring. A good dose of manure will work wonders too. Have you done a soil test lately? It could be that it has become too acidic, so a dose of garden lime before the winter sets in might well be a good idea. The only other advice I can think of is to plant them deeply, right up to the bottom leaves when you plant them out if you don't already do that. Regular watering is essential, especially when they are young - never let young brassicas dry out as this can lead to bolting and blown sprouts etc.