Farm

Farm
imagecaption	Farm icon in the store
Initial Price	500
Base CpS	4
Max CpS	80
In-Game Description	Grows cookie plants from cookie seeds.
Introduction	1.0 Update

The Farm is the third cheapest building you can purchase and has an initial cost of 500 cookies. It produces cookies at a base rate of 4 (as of v1.0375) cookies per second. 100 farms cost roughly 3,914,374,835 cookies.

Upgrades

Farms can be made to become more productive by purchasing the following upgrades from the store:

For upgrades in beta versions of Cookie Clicker (if any), see Cookie Clicker Beta.

Trivia

• You need at least 15 farms to purcase the Farmer Grandmas upgrade.
• Farms have the lowest CpS of any fully upgraded Building when a reasonably large number of Buildings have been purchased, meaning that their greatest use later on is improving the CpS of fully upgraded Cursors. The 150th Farm costs 533 billion cookies but only increases the output of Farms by 20 CpS (before bonus multipliers) with all upgrades; it however contributes 26,520 CpS (plus multiplier) to the Cursor rate and per mouse click, if you have 200 cursors and the Quadrillion Fingers upgrade - a 1326x difference(!). (Please update numbers)
• It has been confirmed that the farms will be the first to get a content upgrade on the scale of the 1.03 update, which re-introduced the Grandmapocalypse.
• Farms were not included in the Classic version of Cookie Clicker. 
• Farms are currently the worst buildings in game. It is not recommended to buy farms for CPS mid-late game.
• Statistically, Farms are the most efficient building to buy first!