Kitsch rating question

KillaSqirl wrote:
All items of the same type effect the meter equally. Just buy whatever you like and you'll be fine.

That wasn't the question. Only 9 trees will add to your kitsch rating, according to the guide. My question is does this mean 9 TOTAL trees, or does it mean the first 9 trees of a specific type affect the rating?

I don't want to buy a tenth tree if it won't change my rating.