Zombie farm

A is a place where you can have a  grow your crops. Those farms come in 3 tiers:, and , where you can only grow basic crops or crops of that tier or below.

Cost
Note: The fields must not be tilled before, otherwise you are not able to build the farm. You can remove tilled fields using the kitchen garden workbench.

Upgrading the Farm
You need to build a tier I farm first. Then you may upgrade it to tier II and afterwards to tier III. You have to use the fertilizer only once to upgrade the farm, it lasts forever.

Upgrading the farm to a higher tier has the following effects:

Working the Farm
Take a near the farm, hit "E" to put it to work, and "E" again to remove it from the farm. Stand next to the zombie, hit "E" to select, and then select which crop should be produced or upgrade the farm.

It takes a while for the crops to be produced - the higher the tier of the farm and the higher the work effiency of the zombie, the faster they work. You'll see a progress bar below the crop that's currently produced. After a while the products are stored automatically in a trunk of the kitchen garden. This sign on the farm means that the trunk is full (or missing) and the work is blocked until some storage space is freed up (or constructed).

Note: The number of crops produced, that are shown in this table and in the GUI of the farm, are only averages. The real numbers differ by a small random amount from those. Also the number of seeds varies around 24.