I use a copper sulphate fungicide powder such as Bordeaux mixture or Murphys copperr sulphate.

Hi! This also happened to me last year with some Lupins and lillies. The supplier agreed to send me some more in November (suffice to say I'll be adding even more sand to the base this time). Not sure if I'm ignorant of "Healing Powder" and certainly don't want to make you feel any worse about your rotted lillies but if there was healing powder that could bring dead plants back to life then I think the supplier would be a billionaire by now :-) Fingers crossed I'm about to be enlightened by a more experienced gardener!

There you go, Bulbaholic to the rescue..what a cynic I am :-) Wish I hadn't given up on mine now!

It's not a perfect solution, Julie, but better than nothing. It's nice that your supplier is sending replacements.
Another commercial name for copper sulphate is Cheshunt Powder, I couldn't think of the name yesterday.

I thought Cheshunt compound was the bright blue stuff that burnt your nostrils off and copper sulphate was the yellow powder.

I've used copper sulphate for dusting bulbs prior to storage before.

Might be worth searching online a bit more as some other sites make reference to Cheshunt compound having to be withdrawn due to new chemical regulations.

Cheshunt is still available in GCs at the moment, Andip, but regulations are always changing.