Re: why cant I decoate my house in the sims 3 seasons

you mean Christmas trees and stuff ?

edit typo edit to add if you want to place holiday lights click on the sims door options place holiday lights the roof needs to be a normal roof as the lights will not work if the house has a flat roof , the other stuff mistletoe you buy in buy mode in the decor section or use the seasons icon collection folder to find items

and if you go  here  and log in you can get some free stuff