My friend, Ron, used to jog around his neighborhood. He began picking up trash. Then he realized that there was a strip of dirt between the sidewalk and wall that was just begging for some attention. Since he is a Master Gardener, he decided to plant a garden. He improved the soil and planted California poppies (our State flower) and iris. Oops! twice the city sprayed for weeds and killed the new plants. After going to the city council, he got them to realize that something good was going to grow.
People will stop and thank him or honk as they go by while he tends his garden.
We call it RON'S WALL. This is what one person can do.