My broccoli has flowered probably due to the excessive heat these past few weeks. Does that mean it is spent and of no use? My allotment neighbour has suggested that I cut off the flowers and watch for side shoots. Is this worth doing?
It sounds like a summer flowering variety, normal behaviour. Now the plants are dry, and waiting for moisture to re-grow and make more nice shoots, which will probably be smaller than the first ones. It is worth cutting off all the flowering stems, water the plants if possible.