Spirea love a hard trim in the winter as they will pop back out more full and colorful the following year. One thing that noone ever really talks about is their fall leaf change, it can be a deep red, a bright orange, or a pale yellow. Spirea are also as tough, they can handle really cold temps.
Spiraea thunbergii 'Ogon'
Ogon Spirea is another great bright yellow leaf spirea that ends up getting a little taller than Candy Corn. It also tends to perform better in the landscape. Ogon blooms in the summer months and loves a solid trim after the first freeze during the winter. In fall, the leaves will turn a bit orange before falling for the winter.