Should all the flowers for Course II finale cake be done in Royal Icing?
Yes, all the flowers should be done in Royal Icing and in advance so that they can dry completely. You can do the mums and rosebuds in butter cream, but it must be stiff consistency. These will need a lot of time to dry and they will not try hard. They are also not as durable as Royal Icing flowers.
Also, there is a link to Royal Icing flowers under "Cake Websites".
