amen @Namtak you're expected to keep trees cut and to have the grass below like 11 inches tall, including weeds.
The curb would be the space between the front of my lawn and the street where you set stuff out, its reserved for city stuff like hydrants, telephone or other polls that the city upkeeps meaning they maintain.
Basically they only do it once a month for like the big stuff, it's not just lawn stuff, you can put out couches or refrigerators if you've bought new to get rid of the old.
The city just picks it up and takes it to the dump for you.
They do food or wrappings from the kitchen and other small house trash once a week.
I'm sure you have the same haha, but in English context too