sallyg said:Hi, I have grown that red mustard, yes it is bolting, and I am pretty sure (but not 100% sure) that you cannot stop that.
I had several early spring brassicas on trial this year, they have all bolted, it is due to day length.
My kale is NOT bolted and I think kale is less sensitive to day length. Mustard may not behave like the kale they cut back.
Try cutting the flowers and see. Or wait for other opinions.