When do you get Jacobs Ladders in your town on Animal Crossing Wild World

In Animal Crossing Wild World for the DS, you get Jacob's Ladders when your town is ranked "perfect". P.S. In case any one's wondering, no Jacob's ladder is not a ladder! It's a flower! P.P.S. You can find out if your town is ranked perfect if you go to the town hall and talk to Pelly when your on the green mat, and ask her about "environment" then she reads comments the animals have said. If they're like "This town is great!" or something like that, ten your town is most likely ranked "perfect"