After reading the material it appears that the issue is similar to HOAs. There is an ordinance that need to be interpreted.
It appears that a city code enforcer is trying to enforce the city code. The owner of the property refused to comply, therefore, she has gotten a summons to appear in court. Because the issue is violating a city ordinance, there is a possibility of jail time if found guilty.
I agree it sounds silly. However, isn't this how some people see members of the Board when they are trying to do their job. Jail time might not be the end result but losing the home through foreclosure could be.
Personally, based on the photos, I don't see how the yard is maintained. It has planter boxes (which are nice) but only what appears to be just dirt surrounding the boxes. I think that had the owner planted grass around the planting boxes, the issue might be less.
Here is a link
to the beginning of her blog that shows pictures Tim