| “ | Villagers gather Food from Mills faster. | ” |
| —In-game description | ||
Seed Drill is a technology in Age of Empires III that can be researched at the Mill or Hacienda once the Commerce Age is reached. Once researched, it allows villagers to gather food from Mills, Farms, Rice Paddies, Fields, and Haciendas 15% faster. Artificial Fertilizer is the further upgrade of this technology.
| Mill and Farm technologies in Age of Empires III | |
|---|---|
 Mill |  Seed Drill ·  Artificial Fertilizer |
 Farm* |  Selective Breeding ·  Great Feast ·  Harvest Ceremony ·  Green Corn Ceremony ·  Large Scale Gathering ·  Cinteotl Worship ( ) ·  Strawberry Festival ( ) ·  Horsemanship ( ) ·  Urcuchillay Worship ( ) |
| * introduced in The WarChiefs | |