One similarity in the both passages is that both have a garden that symbolizes and represents something important to the characters.
Both passages take place in towns.
One main similarity is that both passages face problems. One problem the characters in Marigold face is poverty. One problem the characters in Sowing Change face is the creation of the garden in the beginning.
In Marigolds, the town was referred to as an Shanty Town because it was poor. But in Sowing Change the town was not poor and had money and resources to build a garden.
One main difference was that in Marigolds, the characters were trying to destroy the garden while in Sowing Change, the people tried to create a garden.
Another difference was that the garden in Marigolds represented hate and destruction while the garden in Sowing Change represented beauty and change.