Farm
A Farm is a building that provides food for the colony, and requires the Farm research in the Wood Workshop.
It can be upgraded to an Advanced Farm after the corresponding research.
In-game Description
"Produces food by harvesting grass field from the surroundings."
Overview
The Farm takes up a 2x2 area. For every grass tile in a 2-tile area around it, the farm will place a plot of wheat; other buildings may be placed on tiles with wheat not directly next to the farm, at the cost of losing those tiles for food production. Each block of wheat provides 2 food for the colony. The plots can not be shared with other farms, as they must be built with a minimum of 4 tiles in between each other.
Even though the Farm only gives 64 food with perfect placing conditions, the maximum amount of food you can get out of a single Farm is in fact 77, through placing a Warehouse close to it, boosting the production by 20%. This value then can be doubled by upgrading the Farm to its advanced version.
Note that when being infected, a farm will generate 12 infected, which is a serious threat in early game.