Sue, I wondered what you meant and now I just got done with the "Trees and Shrubs" category. Got it. I agree with Cinda; if someone put them in the wrong category (because Dave would never have a computer glitch) then I disregard them. I think part of voting for the best in each category is that you want a picture that really embodies the category.
I do give a lot of leeway with annuals and perennials since I live in Florida and the flowers don't always follow the rules.
And then there are some that I just scratch my head at. For example, I had a picture of a dahlia and I wondered if it was a perennial or bulb. I guess it's more of a tuber. I generally go to the plant database and see what it says.