Gardner is a city in Johnson County, Kansas, United States.
Gardner was founded as a Free-Stater settlement in 1857. Settled primarily by emigrants from Massachusetts, it was named for Henry Gardner, then governor of Massachusetts. Four years after its establishment, it became the first community in Johnson County—and perhaps the first in the state—to experience an attack by Confederate forces.
The first post office in Gardner was established in 1858.
Geography
According to the United States Census Bureau, the city has a total area of , of which is land and is water. The most notable body of water in Gardner is Gardner Lake, on the north side of town, off South Gardner Road and 151st Street. The headwaters of Kill Creek, which runs north joining with the Kansas River in De Soto, are also in Gardner.
Climate
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Gardner has a humid subtropical climate, abbreviated "Cfa" on climate maps.