It can grow anywhere, when people take off dandelions the root still remains and grow into another dandelion and dandelions send chemicals to other plants nearby which make thos plants grow slowly so...
Everywhere, anywhere and anytime of year. They will grow in your garden of you dont cut your grass, or at public parks.
I hope my answer has been of much use to you.
many plants use wind to help them. with the dandelion the seeds cleverly use wind power, this helps spread the seeds as far away as possible from the parent plant.