Sanctuary city Puns

My friend owns a greenhouse and was trying to drum up sales for valentine's day. She put out a bunch of posters all over town - in the park, outside city hall, and even in a few convenience stores and restaurants. Just about everyone was incredibly helpful and gave her permission. However, the animal sanctuary owner refused outright and asked her to leave. She was very sad, but in the end, she came to understand that...

>!Only zoo can prevent florist fliers.!<