|Resource, Raw material|
|Gathering camps, Farms|
|Natural patches and Fields|
Cotton can only be grown in the Continental biome.
The gather rate of cotton differs from food crops, cotton gathers at twice the rate of other Fields.
The gather rate for natural patches of cotton is between 0.03 and 0.04 per tile.
The gather rate for Fields is between 0.1 and 0.2 per field this however varies with the fertility on which the field is placed.
Since cotton can only be grown in the Continental biome its fertility is limited to a max of 3 since Continental biomes can not be more fertile then fertility 3. this limits the output of a field of Cotton while its competitor Flax which can be grown in Mediterranean, Arid and Desert biomes can have a fertility up to 6.
Here is a chart where cotton grows and is found naturally.