Brussels sprouts for Winterval ?

Not me, but a friend is growing sprouts, they're about 18" tall & have sproutlets forming from minute up to about the size of a marble.
Is there any chance these will be ready for Christmas & what should they be fed with to help them on their way ?

Thanks

Chris

Yes, sprinkle some chicken pellets around and remember, even the small ones are tasty and because they are home grown will be far more tasty than those in the shops.